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CATALOG No.14 

TAP5™DIES 

Carbon G-High Speed Steel 



Winter Bros. Company 

k -WRENTHAM MASS U SA- 













CATALOG No. 14 


AUGUST. 1920 


WINTER BROTHERS 
COMPANY 

Carbon Steel, High-Speed Steel 

Taps and Dies 

Screw Plates 



THISTLE BRAND 


This Catalog Cancels all 
Previous Editions 


jr r 


7 


Wrentham, Massachusetts 
U. S. A. 
























Wrcntham, 








Catalog No. 14 

(High-Speed Steel Tap and Die Lists in 
Colored Section) 

A LL goods listed in this catalog arc fully 
warranted, and we will replace any tool 
showing imperfections either in material 
or workmanship. 

When specifications differ in any way from our 
lists, the goods referred to will be classed as special, 
and will be charged for at special prices, the prices 
depending upon the quantity ordered at one time. 

W hen ordering or making inquiry for special 
goods, give complete specifications, submitting a 
sketch or a sample when possible. 

When ordering either taps or dies to fit a sample, 
always send a male gauge if possible. 

When shipping instructions are not given, we 
will ship in accordance with our judgment, which 
must be accepted by the customer. 

Goods sent by mail at the purchaser’s risk. 

All orders filled with United States Standard 
threads, unless we are otherwise instructed. 

Please read carefully all notes and instructions. 


Machine 

Screw 

Taps 


Beaman 
U» Smith 
Stove 
Boll 

Chaoer* 


*ipe Taps 
and 

Reamers 


Tap 

Wrenches 


3 


Screw 

Plate 

Section 




Plug Hand Taps 


Two and Three Flute 




W'HTr* mDICO- 




Wc do no( ad- 
vise the use of 
taps a* illustrated 
herewith for hand 
tapping, though 
they will often be 
found to be very 
well adapted for 


use in steel. We state with assurance, however, that there are various 
classes of machine tapping in which these styles will eliminate consider¬ 
able trouble and expense. 

Screw machine operators tapping steel will find that the two flute 
taps have the necessary cutting qualities and are much stronger than 
ordinary taps. 

We furnish these tapis at regular prices in a limited number of sizes 
and threads as per list below, and machine screw tap list on page 15. 
Other sizes and threads made to onler. 

All Left-Hand Tapis are special. 


SIZES AND PRICES 


Diameter 
of Tap 
Inche* 

Price Each 

Number of Threads to the Inch 

Two 

FI lit* 

Three 

Flute 

V, S 

Standard 

S A. E. 

Standard 

U. S. Form 

llltK) 

Furnished 

*A* 

A' 

A' 

$0.50 

.35 

.40 

.45 

SO .50 
.55 
.40 

.45 

04 

40 

24 

24 


72 

32 

32 

32 

Discount Chances Here 

20 

IS 

10 

H 

13 

2S 

24 

.*4* 

A' 

.45 

.50 

.45 

.50 

.55 

<i0 

.70 

2-4 

24 

20 

20 

20 

20 

24 

12, 24 


Taper and bottoming taps are special and subject to special price*. 
•Exceptions— A* and ‘s' in three flute are regular and will be 
furnished in taper, plug or bottoming style at regular price*. 


4 




Machinists' Hand Taps 

Under 5 ” diameter 



British 

AnVn. 

Taps 


Sarial 

Taps 

Pulley 

Taps 


m 


PawvA'vVs/ 



-1 


Nut 

Taps 


Machine 

Screw 

Taps 


Tapper 

Taps 



All order* will be filled with United States Form of threads unless 
Otherwise specified. 

All sizes, lengths and threads not listed are special, and subject to 
special prices. 

Taps with Left*Hand thread? are special 


SIZES AND PRICES 


Diameter 
Of Tap 
Inches 

Number of Threads to the Inch 

Price 

Standard Pitches 

U. s. Form 
Threads also 
Furnished 

Each 

Pri Set 

U.S 

Whitworth 

A 

$0.50 

*1.54) 

64 

60 

72 


.45 

1.35 

60 


72 

A 

40 

1.20 

50 

48 

48 

X 

40 

1.20 

48 



h 

.35 

1.05 

40 

40 

32 

fi 

.35 

1.05 

40 



A 

.35 

1.05 

36 

32 

32 

a 

.35 

1.05 

32 



A 

.40 

1.20 

24 

24 

32 

a 

.40 

1.20 

24 




.45 

1.35 

24 

24 

32 

a 

.45 

1.35 

24 




(Continued on next page.) 

See other styles of flutes for small sizes, on opposite page. 


5 


Patch 

Bolt 

Boilor 

Tap* 


Beaman 
A Smith 
Stove 
Bolt 

Chasers 


Stay- 

Bolt 

Taps 


Mud 

Plug 

Taps 


<*lpeTaps 

and 

Reamers 


Bio 

Hobs 


Metric 

Taps 


Tap 

Wrenches 


Ola 

ioctlon 


Screw 

Plate 

Section 






Machinists' Hand Taps 

Size* of Shanks Furnished Regularly in : and larger 

Full Size Shanks 


Bottom ing 


The above style with shanks the full diameter of thread will be 
furnished in all sizes up to and including ; j r . 

Exception—will be furnished with shanks the diameter of Ik>(- 
tom of thread when orders so specify, at regular prices. 

Shanks, the Diameter of Bottom of Thread 


Bottom* n* 


This style with shanks the diameter of lH»ttom of thread will I*, 
furnished in all sizes. and larger. 

*s ¥ will also he furnished in this style, when specified, .it regular 
prices. 

T. S. Standard form of thread furnished unit** otherwise - • iln-d 
Left-Hand Taps are special. 

See page 115 for table showing the approximate sizes, in de« inuil* 
of shanks and squares. 






British 

Assn. 

Tep* 


Machinists’ Hand Taps 

l" to 1" 

SIZES AND PRICES 


l 






Number i>l Ttirca«U to the 

In* h 


Diam¬ 
eter of 

Price 

Standard Pitches 

U. S 

Poena Threads 
also Fur¬ 
nished 

Lenctli 

Overall 

Tap 

Inrhrs 

Each 

US. 

S4d. 

s a E British 

std »orth S*«l 

Std 1- tu 

l 

Discount Chanties Here 

■. 

$0.45 $1.35 

-jo 

28 20 26 

24.27,32 

2’j 

ft 

.50 1.50 

18 

24 18 22 

20,27,32 

21J. 


.55 1.65 

10 

24 lii 20 

20.27 

2K 


Discount ('hiiniin Hm 


ft 

.60 

1.80 

14 

20 

14 

is 

24,27 

3ft 

H 

.70 

2.10 

13 

20 

12 

10 

12,24,27 

31s 

A 

.80 

2.40 

12 

IS 

12 

10 

27 

3H 

.8 

.<>0 

2.70 

11 

18 

11 

14 

12.27 

3H 

11 

1« 

1.05 

3.15 

11 

10 

11 

14 


4ft 

X 

1.20 

3.60 

10 

16 

10 

12 

12,27 

4‘ 4 

H 

1.40 

4.20 

10 


10 

12 


4tt 

pi 

1.60 

4.80 

9 

14,18 

9 

11 

12,27 

4H 


1.80 

5.40 

9 


9 



45? 

1 

2.00 

6.00 

8 

14 

8 

10 

12.27 

5'« 


(Continued on next paged 

Orders will be filled with United States Standard form of threads 
unless otherwise specified. 

Left-Hand Taps are special. 

See page 6 for diameter of shanks furnished regularly. 

The approximate diameters of shanks and sizes of squares, in 
decimals, are shown on page 113. 


Serial 

Taps 

Pulley 

Tap* 


Nut 

Tap* 


Machine 

Screw 

Taps 

Tapper 

Taps 

Paten 

Bolt 

Boiler 

Tap* 


Beaman 

A Smith 
Stowe 
Bolt 

Chaser* 


Stay- 

Bolt 

Tap* 


Mud 

Plug 

Tap* 


^ipe Tap* 
and 

Reamers 


Dla 

Hobs 

Metric 

Tap* 

Tap 

Wrenches 


Die 

section 

Die 

Stocks 


Screw 

Plate 

Section 




Machinists’ Hand Taps 

1>4" to 2J4" 

SIZES AND PRICES 


Dim¬ 
eter of 
Tap 
Int hr* 

Price 

Number of Threads to the Inch 

Length 
Overall 
Incher 

Standard Pitches 

_ 

Each 

Per 

Set 

U.S, 

5ld. 

S. A E. 
Std. 

Whit¬ 

worth 

Std. 

Brifr-b 

Standard 

Fine 

Discount Change* Here 

iyi 

$2.25 

$6.75 

7 

12 

7 

» 


i% 

2.60 

7.80 

7 

12 

7 

9 


i 5 » 

5.00 

9.00 

6 

12 

6 

8 

61 * 

IX 

3.50 

10.50 

6 

12 

6 

8 

6 H 

1)» 

4.20 

12.60 

5« 


.5 


6 H 

I»4 

5.00 

15.00 

5 


5 


7 

i;< 

5.SO 

17.40 

5 


43f 


7 A 

2 

6.70 

20.10 

4 X 


4'* 


7 H 

DUcounr Change* Here 

2'A 

8.00 

24.00 

\ 


4'j 


a 

2 ',' 

9.20 

27.60 

4« 


4 


8 *i 

2 's 

10.50 

31.50 

4 


4 


8 >, 

2H 

11.50 

34.50 

4 


4 


8 *. 


(Concluded) 

Orders wilt be filled with United States Standard threads unless 
otherwise specified 

Left-Hand Taps are special. 

See page 6 for diameter of shanks furnished regularly. 

The approximate diameters of shanks and size* of squares, in deci¬ 
mals, are shown on page U.'i. 


S 



British Association Taps 



British 
Ass 'n. 
Taps 


Serial 

Taps 

Pulley 

Taps 


Nut 

Taps 





When 90 ordered, the taps will be furnished in sets of taper, plug 
and bottoming, like hand tap. 

Plug taps furnished unless otherwise specified. 

Sizes, lengths and threads not listed are subject to special prices. 
Left-hand taps are special. 


Machine 
Sen: mi 
Tap* 

Tapper 

Taps 

Paten 

Bolt 

Boiler 

Taps 


Beaman 
As Smith 
Stove 
Bolt 

Chaaars 



Taps 


Mud 

Plug 

Taps 


SIZES AND PRICES 


No. 

Price Each 

Otatm. 
mm. 

Pitch mm. 

No. 

Price ELich 

Diameter 

mm. 

Pitch 

mm. 

0 

$0.35 

6 0 

1 00 

7 

$0.35 

2 5 

48 

1 

.35 

5 3 

.90 

8 

.35 

2 2 

43 

2 

.35 

4 7 

.81 

9 

.40 

i a 

39 

3 

.35 

4 1 

73 

10 

.45 

17 

35 

4 

.35 

3.6 

. 6*1 

12 

.50 

l :i 

.28 

5 

.35 

3 2 

.50 

14 

.60 

1 0 

23 

6 

-35 

2.8 

.53 






i*ipe Taps 
and 

Reamers 


Dia 

Hobs 


Metrio 

Taps 


Tap 

Wrenches 


Olo 

faction 

Dia 

Stocks 


9 


Screw 

Plate 

Section 







Serial Taps for Hard Service 







The»<* taj* are regularly furnUhed in seta of three, in sizes to 1J" 
diameter. 

Their order in iteration U indicated l»\ the number <4 ring* around the 
shanks. The work is distributed so each tap can lx* easily operated with 
slight chance of breakage. 

l/nited States Si.md.tnl tape* furnished unless otherwiae specified. 

Left-Hand Taps are social. 

SIZES AND PRICES 


Du meter 
of Tap 

Ini hr* 

Price 

Numlwr of Thread* to the 1 tv. 

Each 

Per Set 

V. s. 

Standard 

WOirworlh 

Standard 

y, ~ 

i' 

51.35 

30 

20 

A 

.so 

ISO 

18 

IS 

1, 

.55 

1.65 

10 

10 

A 

.60 

ISO 

14 

14 

■r 

.70 

2.10 

13 

12 

A 

.50 

2.40 

13 

12 

1* 

.00 

2.70 

II 

11 

K 

1.05 

3.15 

II 

11 

>, 

1.20 

3.00 

111 

10 

H 

1.40 

4 20 

111 

10 

■» 

■ Ml 

4.80 

0 

<1 

H 

ISO 

5.40 

9 

9 

l 

2.00 

0.00 


8 

Dismunr Clunfifs Here 

n 

2.25 

6.75 

7 

4 

h 

2.00 

7.80 

7 

7 

i 

.1.00 

0.00 

ti 

0 

i 

3.50 

III ^11 

6 

6 


These t.»]is arc tarnished with shanks the lull size of thread from to 
l ,f inclusive, larger sizes, the shanks are the diameter of the bottom of 
thread. The lengths of these taps over-all, .ire the same as hand tups 
listed on pages 7 and S. ip 




Pulley Taps 


T ops 
Pulley 
Tops 


Nul 

Taps 


Jp™ uizraui-} 


Machine 

Screw 

Taps 

Tapper 

Taps 


Pulley Taps are furnished in plug style only. 

AH orders filled with United States Standard threads only. 
All sixes and threads not listed are subject to special prices 
Left-Hand Taps are special. 


SIZES AND PRICES 


Paten 

Boll 

Boiler 

Taps 


Beaman 

& Smith 
Slava 
Bolt 

Chasers 


Diam¬ 
eter of 
Tap 

Inc he* 


Length Over-all —Pr»ce Each 


Number ol 
Threads 
to th- 1^ h 

e" 

8" 

W 

IS" 

14" 

U.Jv 

Std. 

u 

$0.65 

$0.70 




20 

A 

.70 

.75 




18 

4b 

.80 

.85 

$0.90 

$0.95 

$1.00 

16 

A 

.85 

.95 

1.00 

1.05 

1.15 

14 

yi 

.05 

1.05 

1.10 

1.15 

1.25 

13 

A 

1.00 

1.15 

1.25 

1.35 

1.45 

12 

4a 

1.10 

1.35 

1.40 

1.50 

1.65 

11 

4 4 



1.85 

1.95 

2 00 

111 


Stay* 

Bolt 

Taps 


Mud 

Plug 

Taps 


<*ipeTap» 

and 

Reamers 


Die 

Hobs 

Metric 

Taps 


Tap 

Wrenches 


Die 

■action 

Die 

Stocks 


Screw 

Plate 

Section 





Nut Taps 

All order*, will be filled with U. S Standard threads 
unless otherwise specified. 

Nut Taps with threads conforming to the standard 
adopted l»\ the automobile manufacturer*, formerly called 
A. L. A. M.. now S. A. H. Standard, and having U. S. 
Form thread*, are included in this list. 

All sizes, lengths and threads not listed are special, and 
subject to special prices. 

All Nut Taps with Lch-Hand threads are special. 

List prices on next page. 


12 



Nut Taps 

A" to 21" 

SIZES AND PRICES 



Diameter 
of Tap 
Inches 

Price 

Each 

Number *M Tlirt-aiJ* to tl>e Inch 

U. S. S A K \\ hitworlh 

Standard Standard Standard 

Length 

i •. i iH 

Inches 

' A 

$0.60 

24.32 


24 

4'< 

i / i 

>4 

.60 

20 

28 

20 

5 

JL 

rc 

.70 

18 

24 

18 

5'» 

X 

.80 

10 

24 

16 

6 

A 

.00 

u 

20 

14 

6<i 

X 

1.00 

13 

20 

12 

7 

A 

1.15 

12 

18 

12 

7'j 

X 

1.35 

11 

18 

11 

8 

11 

1.60 

11 

16 

11 

SX 

X 

1.85 

10 

16 

10 

9 

H 

2.15 

10 

-.. 

10 

9X 

H 

2.45 

9 

14,18 

9 

10 

a 

2.80 

ft 


9 

10 .K 

i 

3.15 

s 

14 

8 

li 


Discount Chanties Here 


l X 

3.70 

7 

12 

7 

11 

1 '4 

4.50 

7 

12 

7 

12 

14* 

5.50 

G 

12 

6 

12'4 

IX 

6.75 

6 

12 

6 

13 

IX 

8.00 

5} 


5 

13', 

1 4 4 

9.25 

5 


5 

14 

u* 

10.75 

5 


4 X 

14 X 

2 

12.25 

4> 


4'.. 

15 


Discount Chanties Here 


2X 

14.00 

41 

> c . 

4X 

15X 

2X 

15.75 

4} 

... 

4 

16 

2X 

17.75 

4 

* . i 

4 

16 X 

2X 

20.00 

4 

• •• 

4 

17 


United States Standard threads furnished unless otherwise specified. 
Left-hand taps are special. 

Sizes, lengths and threads not listed are special, and subject to 
special prices. 

13 


Nut 

Tap* 


Machine 

Screw 

Tap* 


T *PP»' r 

Taps 

raten 

Belt 

Boiler 

Taps 


Beaman 
A Smith 
Stove 
Bolt 

Chasers 


Slay- 

Boll 

Taps 

Mud 

Pluo 

Tap* 


i*ip«Taps 

and 

Reamers 


Dio 

Hobs 

Metric 

Taps 

Tap 

Wrenches 


Die 

taction 

Dio 

Stocks 


Screw 

Plate 

Section 



Y— j), . Oj 

Machine Screw Taps 

For Machine Ute Tapping Steel or Any Metal Requiring Lots of Chip Room 

We have always had among our customers numerous large consumers 
of machine screw taps. We have kept in close touch with these tap users, 
constantly watching results and endeavoring to increase the production 
per tap. 

After several years of experimental work our experience has led us tn 
carry in stock machine screw taps with three Styles of fluting. The regular 
style, shown on page 15, we believe to lie best for hand use and for most 
cast-iron work. For machine use, tapping steel or other tough metals, the 
two flute taps shown above will be found to do good work and greatly 
reduce the breakage loss on small sites. In sizes above No. 14 some users 
prefer the three flute style for steel. 

Machine screw taps will be furnished regularly, as follows: 

TWO FLUTE 

In all regularly listed sizes in Plug style only. 

THREE FLUTE 

ftp to and including No. h in taper plug or bottoming. No. 7 
and larger in plug style only. 

FOUR FLUTE 

No. 7 and larger In Taper Plug or bottoming. 

When not otherwise ordered, machine screw taps up to 
No. 6 inclusive, will have three flutes, and larger taps four flutes, 
in Plug style. 

We are well prepared to make to order special small taps of all kinds. 
The prices of these will v ary with the quantities ordered. 

Do not try to tap full threads with machine screw taps. It does not 
often happen that over 75% of the total thread depth is required and 
frequently considerable less will answer just as well, and save taps and 
trouble. 

See tap drill table, page lid. 


14 







Machine Screw Taps 





Machine 

Screw 

Tap* 


A. S. M. E Standard 

Machine Screw Tap* will I** furnished in -<*1* «»f taper, plug and 
bottoming, when desired, at regular prices. 

Plug Taps will l>e furnished unless otherwise specified. 

All sizes and tlire.ids not listed will he considered i[nri;il, and subject 
to special price*. 

Left >Hand Machine Screw Taps are special. 

SIZES AND PRICES 



Price 

N'o erf Threads to the Ini li 

l.enuth 


Screw 

Gautt* 

No 





1 .ninth 
Over -all 
In* lies 

[vadl 

IVr Dmzch 

Stan¬ 

dard 

Also 

Furnished 

ut 

1 

In* lie<* 

U 

$0.50 

$0.00 

SO 



VH 

1 

.50 

6.00 

72 

m, 64 

it 

i 11 

1 is 

2 1 

.45 

5.40 

1*4 

5f» 

1 z 

i>* 

3 

.40 

4*0 

56 

48 

e 

I* 

US 

4 

.40 

4.80 

4s 

32, 36, 40 

*8 

1 "* 

b 

.35 

4.20 

44 

36. 40 

H 

IK 

6 

.35 

4.20 

40 

32. 36 

3 4 

2 

7 

35 

4.20 

36 

:«), 32 

H 

2A 

8 

.35 

4.20 

36 

30, 32, 40 

7 a 

2,'s 

9 

.35 

4.20 

32 

24, 30 

H 

2'* 

10 

.40 

4 80 

30 

24, 2S, 32 

■. 

14 

24s 

12 

.45 

5.40 

28 

24. 32 

1 


Discount Changes Here 

14 

.45 

5.40 

24 

90 

l 

V, 

16 

.45 

5.40 


18, 20 

1A 

2', 

is 

.50 

6.00 

20 

18 

l A 

•«* 

“1'.' 

20 

.50 

6.00 

20 

16, 18 

!■« 

•IV » 

- 


See pages 110 and 111 for detailed information on screw* of A 
S. M. E. standard. 


Tapper 

Taps 

raten 

Bolt 

Boilor 

Taps 


Beaman 
«. Smith 
Stove 
Bolt 

Chaser* 


Stay- 

Bolt 

Taps 


Mud 

Plu« 

Taps 


?ipeTap* 

and 

Reamers 


Dia 

Hobs 

Metric 

Taps 

Tap 

Wrenches 


Die 

iectlon 

Die 

Stocks 


Screw 

Plate 

Section 





Tapper Taps 



Unless otherwise specified all order* will be fillet I with 
U. S. Standard thread taps, eleven inches long, with plain 
round shanks. 

All sires, lengths and threads not listed arc special, and 
subject to special prices. 

Tapper Taps with Left-Hand threads are special. 

Tapper Taps with threads conforming to the standard 
adopted by the automobile manufacturer*, formerly called 
A. L. A. M.» now S A. K. Standard, arc included in this list. 

Taps to fit most of the well-known tapper sockets, and 
taps with square heads, are furnished at regular prices. 

List price* are on opioxiti* page- 





SIZES AND PRICES 


Diam¬ 

L* -lUttli Over-all—Price 

Each 

1 Numlx-r of 

Threads to tlir Ini li 

eter of 
Tap 
Inches 

n" 

12" 

H" 

IS" 

U. s. 

SW 

< A E. 

S|4. 

W hit- 
won li 
Std. 

y* 

SO.70 

SO. 75 

SOSO 


'211 

28 

20 

A 

■HI) 

.05 

.00 


IS 

24 

IS 

»» 

.00 

.05 

1.00 

$ 1.10 

111 

24 

in 

A 

1.00 

1.05 

1.15 

1.25 

14 

2D 

14 

X 

1.10 

1.15 

1.25 

1.35 

13 

2D 

12 

• 

ns 

1.30 

1.55 

1.45 

1.55 

12 

18 

12 

H 

1.45 

1.50 

1.65 

1.75 

11 

18 

II 

H 


1.70 

ISO 

1.05 

11 

in 

II 



1.05 

2.00 

2.10 

ID 

in 

ID 

H 


2.20 

2.25 

2.35 

ID 


ID 

li 


2.50 

2.00 

2.75 

9 

14. is 

9 

It 


2.00 

3.00 

3.15 

0 


9 

1 


3.50 

3.50 

3.65 

8 

14 

8 


l>iH<«»unt ChanfiM Here 


t H 

4.00 

4.15 

7 

12 

7 

iy. 


4.00 

5.10 

7 

12 

7 

in. 


5.75 

6.00 

r» 

12 

6 

*x 


7.05 

7.35 

fi 

12 

6 

i»* 


8.00 

8.35 

hM 


5 

l*a 


0.25 

0.65 

ft 


5 

Ih 


10.15 

10.75 

r, 


4»* 

2 


11.50 

12.25 

4H 


4# 


Tapper 

Tsps 

Paten 

Bolt 

Boiler 

Taps 


Beaman 

A Smith 
Stove 
Boll 

Chaaars 



Mud 

Plug 

Taps 


<»ipe Taps 
and 

Reamers 


Ole 

Hobs 

Metric 

Taps 

Tap 

Wrenches 


Die 

lection 

Ole 

Stocks 


17 


Screw 

Plate 

Section 



Patch Bolt Taps 




These laps taper J 4 M to the foot. 

The diameter is measured 5 a* from large end of thread. 

Will be furnished in U. S. S. or V form of thread as specified. 

U. S. S. form of thread furnished unless otherwise specified. 
Left-Hand Taps are special. 

Sizes, lengths and threads not listed arc subject to special prices 


Straight and Taper Boiler Taps 



Sir Mil* 



T*prr 


These taps taper to the foot. 

The diameter i-» measured 's* from large end i>f thread. 

Will be furnished in U S. S. or V form of thread as desired. 

U. S. S. Form of thread furnished unless otherwise specified. 
Left-Hand Tap* are special. 

Sizes, lengths and threads not listed are subject to special prices 


18 









Patch Bolt Taps 

All Patch Bolt Taps have 1*2 threads to the inch 
SIZES AND PRICES 


Dm meter 


Length 

Diameter 


Length 


of Tap 

Price Each 


of Tap 

I'nce Each 

Owr-all 


Inches 


Inches 

Inches 

Indies 


X A 

$1.00 

3 

it 

it 

$2.40 

3 ■ 4 


& 

1.10 

3 

i 

2.80 

3-4 


fi 

1.25 

3 

DUcnunr Clninitvo Here 



1.45 

3 

• A 

2.00 

3X 

Patch 

Bolt 

X 

1.7* 

3'c 

IX 

3.00 

3X 

Boiler 

H 

1.05 

V/i 

1A 

3.15 

3X 

Tap* 

H 

2.25 

3'4 

IK 

3.35 

3X 

■ n ■ 







Beaman 







A Smith 







Stove 

Bolt 


Straight and Taper Boiler Taps 


Chaser* 

All Straight and Taper Boiler Taps have 12 

threads to the inch. 

Stay* 

Bolt 



SIZKS AND PRICES 


Taps 

Diameter 


Length 

Diameter 


Lenct h 

Mud 

of Tap 

Price Each 

Over -all 

oi Tap 

Price Each 


Plug 

Inches 


Inches 

Inches 


Inches 

Taps 

" X 

$1.05 

4X 

1A 

$3.85 

7 

«*ipe Taps 


1.25 

4*8 

IK 

4.05 

7J B 

and 

X 

1.40 

5 

iA 

4.35 

7K 

Reamers 

H 

1.60 

&X 

1*8 

4.70 

7*8 

Ole 

Hobs 

X 

1.95 

aX 

• A 

5.30 

7X 

H 

2.25 

5*4 

IX 

5.50 

IX 

Metric 

n 

2.50 

6 

IH 

5.80 

7*4 

Taps 

it 

2.80 

6 . 

IX 

6.10 

7 a 

Tap 

i 

3.35 

6' S 

l H 

6.40 

8 

Wrenches 

UiH.jiunl < » ll»T »■ 

2 

6.70 

8 


1A 

3.50 

6X 




Die 

IX 

3.65 

6?» 




lection 






Ole 







Stocks 




11) 



Screw 

Plate 

Section 



Taps for Beaman and Smith Holders 




All orders tilled with United States Standard threads unless other¬ 
wise Specified. 

Beaman and Smith Taps are furnished regularly in plug style only. 
Left-Hand Taps arc special. 


SIZES AND PRICES 


of Tap 
Inches 

Price 

Each 

\.. ■ .1 ThiiMijs »" Inch 

Diameter 
of Shank 
Inches 

Length 

Overfall 

Inches 

Fitting 
No. 1 
Holder 

Fitting 
No. 2 
Holder 

0. s. 

Standard 

S. A. E. 

Standard 

>4 

$*.55 


20 

28 

| 

2*4 

A 

.55 


IS 

24 

i 

• 

3 

J$ 

.55 


16 

24 

: 

3*4 

j 

IT 

.75 


14 

20 

1 

3*f 

X 

.75 


13 

20 

} 

3i, 

A 

.SO 


12 

18 

1 

4 

H 

.<>0 


11 

18 

\ 

4 

it 


$1.20 

11 

18 

{ 

3ti 

H 


1.20 

11 

16 

3 

4'g 

’4 


1.20 

10 

16 


4 A 

H 


1.50 

10 




7 i 


1.60 

a 

14, 18 


v* 

H 


1.80 

9 



57. 

V' 


2.20 

8 

14 

I 

5 ft 

1.4 


2.40 

7 

12 

| 

6 

Vi 


2.60 

4 

12 

i 

6 


Prices on taps fit t ing No. 2} and No. 3 holders given on application. 
These taps are also suitable for the Wizard Turret Tap Holder. 

In the tapping of tough metal we do not recommend the use of H' 
tap* with.No. 1 shanks or 1J' and lj,' taps with No. 2 shanks as there 
is not sufficient strength to stand the strain. 


2tl 


Stove Bolt Taps 




iS^^^^^^^aaamunannnirrji^ Qi 

We make our Stove Bolt Taps to correspond to the American Screw 
Co.’* Stove Bolts. Stove Bolt Taps furnished in plug style only. 

All sizes and threads not listed are special, and subject to s|R-cial 
prices. Two (luted Stove Bolt Taps furnished at regular prices in 



A'. 1 \ Jn.l A" si*e« only. 

Left-Hand Taps are Special 



SIZES 

AND PRICES 


Diameter of 

Tap 

Inches 


Price 

Nunit*-t Of Th leads 

Each 

Pet Dqhd 

to the Inch 

A 

$0.10 

$4.80 

24 

Discount Changes Here 

y* 

.45 

5.40 

IS 

A 

.50 

6.00 

18 

4a 

.55 

6.60 

If, 


Hand Screw Chasers 


Buman 
A Smith 
5love 
Bolt 

ChM«o 


Stay 

Bolt 

T»P* 





Aivn* IMS C! 


HI m • 


ftmru no? ct 



Mud 

Plug 

Taps 


•ipoTapn 

and 

Reamers 


V Form of thread furnished unless otherwise specified. 

All threads not listed are special, and subject to special prices 


Number of Threads per Inch 


Each 

1 Per Pair 

V and U. S. Form 



4*^, 5, 5»>,6. 7, 8, 9, 10. 11, 11 12, 13. 14. 10 

IS, 10. 20, 22, 24, 20, 27, 2S, 30. 32, 34, 30, 38, 40 

$0.40 

.35 

$0.80 

.70 

Whitworth Standard. BrtUalt Standard Floe, and 

British Pipe Standard 


5,6, 7,8, 9, 10. 11, 12, 14. 16 

.40 

.80 

18, 19. *20, 22. 24, 20, 28. 32, 40 

.35 

.70 


Ota 

Hobs 

Metric 

Tapi 

Tap 

Wrenches 


Die 

»#cHon 

Die 

Stocks 


21 


Screw 

Plate 

Section 







Spindle Stay-Bolt Taps 



£M 


i H «|| ft: II ttf-numi PTUdin' 11 



For re-tapping stay-bolt holes from the inside of locomotive fireboxes. 
United States Standard form of thread furnished unless otherwise specified. 
V Standard thread furnished at regular prices. 

Taps shorter than 8" will be charged as if S" long, and fractions of an 
inch will be charged a* a full extra inch. 

Spindle stay-bolt taps of the following measurements arc carried in 


stock. 

Length over all. . 7f" 

Length of fluted thread. 3J" 

Length of unfiuted thread . . 2}" 

Diameter of spindle . 

Length of spindle. 11" 

.Ml taps have 12 threads per inch. 


SIZES AND PRICES 


Price 

r\l-m.I.r _ 

DillSlHi'l 

Price 

of Tap 
Inches 

For a Tap 
7J" Long 

Per Inch 
for Other 
Length* 

of Tap 
Inches 

For a Tap 
7|" Long 

Per loch 
lor Other 

HI Ihl 

4 

9 

$8.00 

SUM ) 

iA 

$10.80 

$1.35 

{t 

8.40 

1.05 

U 

11.20 

1.40 

\ 

8.80 

1.10 

lA 

11.60 

1.45 

H 

0.20 

1.15 

1J 

12.00 

1.50 

l 

0.60 

1.20 

1A 

12.40 

1.55 

lri 

10 00 

1.25 

i; 

12.80 

1.60 

11 

10.40 

1.30 


















Stay-Bolt Taps 

In ordering stay-bolt tap*, state diameter and num¬ 
ber of threads to the inch; also length and dimensions of 
[Arts as indicated in t lie cut by letters A* B. C\ I ). K. 

All si.iy-Uilt taps will Ik? furnished with 12 I’.S.S. 
thread* to the inch. unless otherwise -»pecihed. 

Stay-bolt taps with 12 thread* to the inch, V and 
Whitworth Standard forms, furnished at regular list and 
discount. 

The dianveter given i* that of the thread at its 
straight part. 

Price* are for each inch of length. 16 inches ami up¬ 
wards. 

Fractions of an inch will be charged as a full extra 
inch. 

Taps shorter than 16 inches will be charged as if 16 
inches long. 

Blank order slips w ill lie furnished on application. 

Stay-bolt taps 20 inches and 21 inches long in «»•* 
{" to 1 y diameter having the following proportion*are 
considered regular and carried in stock. The 
discount on those of other dimensions depends on 
the quantity ordered. 



A 

B 

C 

D 

E 

20 

1 

6 

is 

6 

§1 

24 

1 

8 

2 

6 

7 


Diameter of 
Tap. Inches 

Price 
ptt Inch 

Diameter of 
Tap. Inches 

Price 
per Inch 

\ 

$ 0.40 

ia 

$0.55 

p 

i 

.40 

i 

.55 

.40 

\h 

.(>0 

H 

.45 

i) 

.60 

i 

.45 

1A 

.70 

• A 
it 

.50 

.50 

u 

.70 


23 


Stay- 


Bolt 

Top* 


Mud 

Plug 

Tap* 


*ip«Taps 

and 

Reamers 


Die 

Hob* 

Metric 

Tap* 

Tap 

Wrenche* 


DU 

lection 

DU 

Stocks 


Screw 

Plate 

Saction 










MMMMII 









Mud Plug Taps 


Used fur tapping washout holes in locomotives. 

These tap* taper IJ" per foot, and the complete set of four tap-' 
covers a range in cutting size from l}’* to 3". They are marked to 
correspond with taper plugs bearing the same numbers as the twelve 
diameters shown on the four taps. 

Each tap is 6$" long, and all have the same size shank and square. 
All taps have 12 threads to the inch, and can be furnished in either 
V' or United Slates Standard form of thread. United States Standard 
thread furnished unless otherwise specified. 

Sizes, lengths and threads not listed are special and subject to special 
prices. 

ladt-Hand Taps arc special. 


No. 


Irk hrs 

Price Each 

i 

1} 

to 2* 

$7.60 

2 

2A 

to 21. 

0.50 

3 

2} 

«o 2)1. 

12.50 

4 

2« 

to 3 . 

14.45 


Mod 

Plug 

Tap* 


'ipeTaps 

and 

Reamers 


Ole 

Hobs 

Metric 

Taps 

Tap 

Wrench** 


Dla 

Section 

Dla 

Stocks 


Screw 

Plate 

Section 


25 




Pipe Taps and Pipe Reamers 




Tap Small Shank T ap Latpe Shank Rwmei 


•s" size Up only will lie furnished with lar^c nr small shank as 
desired. all other sizes furnished with .small shank only. 'n" size tap 
furnished with small shank unless otherwise specified. 

Prices on opposite page. 

Pipe Hobs arc listed on pa^e 32. 

Pipe Taps with inserted cha*cr*are listed on page 2S. 



Pipe Taps, and Pipe Reamers 



Briggft* Standard Right-Hand Pipe Tap* will be furnished units* other 
wbe specified. 

Straight (plug) pi|>e taps will be furnished at regular price*. 

Hrifigs’ Standard Left-Hand Pipe Taps take a different dis¬ 
count from Right-IIand. 

All other Left-Hand Pipe Taps an- special. 

Reamers for Briggs* Standard Pipe Taps take the same li*l price* as 
1 he taps. 

SIZES AND PRICES 




N’umlicr i 

if Thread* 



Nominal 


to tlvr Inch 

Lengt h of 

Length 

S«e 

i Price Rai h 



Thread 

< toer-all 

Inches 


Brisits* 

Wtntunnli 

Inches 

Ilk he* 



Stondi.nl 

Standard 



“ H 

$1.00 

27 

28 

’4 

21 M 

H 

1.20 

18 

10 

1>‘« 

2ft 

3 » 

I.M 

18 

10 

iX 

2ft 

A 

2.00 

14 

14 

U« 

3 [ s 

s« 

2.HO 


14 

Us 

3ft 

>. 

2.80 

14 

14 

Us 

3!< 

H 

4.40 


14 

i A 

3 A 

1 

4.40 

M} 

II 

1»4 

3>. 

Dittcount Chuniiei Here 

i% 

5.00 

11} 

11 

1 J 4 

4 

lA 

6.00 

11} 

11 

Uo 

4;; 

m 

8.00 


11 

u 4 

4<» 

2 

10.00 

11} 

11 

Ui 

4 A 

Discount Changes Here 

2'. 

12.00 


11 

2,’» 

s 

2A 

15.00 

8 

11 

2ft 

5 A 

*2»« 

18 00 


11 

2ft 

5*4 

3 

22 50 

8 

11 

25ti 

ii 

Discount Changes Here 

3 '4 

25.50 


11 

2s» 

654 

3A 

50.00 

8 

11 

24 

6 A 

3 A 

56.00 


11 

2H 

65 s 

4 

45.00 

8 

11 

2 >4 

6Ji 


* All our pipe taps 2f" and larger are made in the inserted chaser 
style only (*cc page 28). The 2|' size is made either solid or with in¬ 
serted chasers. 


Pipe Taps 
and 

Ro*m«rt 


Die 

Hobs 


Metric 

Taps 


Tap 

Wrenches 


Die 

fc— How 

Ole 

Stocks 


27 


Screw 

Plate 

Section 



Pipe Taps with Inserted Chasers 



r * fa 


This style r>f tap has been thoroughly testril and approved by our 
most particular customers. 

High-Speed Steel Taps of this style arc especially economical. (See 
note on page 93.) 

These taps are also furnished in Whitworth Standard threads at 
regular prices. 



l J rkvs 


Tap Complete 

Cliasers I’er Set 

•11 

•j 

$15.00 

$6.00 

3 

22.50 

6.00 

IHvrnunr Cttan&iw Hr rut 

3} 

30.00 

6.00 

4 

45.00 

6.00 


Si/.c-s up to 4" ire carried in stock, and prices on these sizes are 
subject to discount. The larger sizes are made to order only. 

Large taps of all kinds made to order in this style. 

Solid l'i[«- Taps listed on page 27. 


28 



29 


Index for Die Hobs 


Short Die Hobs . 
Long Die Hobs 
Pipe Hobs 


Page 
.30 
. .31 
. 32 


Mob* 

Metric 

Taps 

Tap 

Wrenches 


Ole 

iectlon 

Ole 

Sleek* 


Screw 

Plate 

Section 








Short Die Hobs 



United States Standard threads furnished unless otherwise specified. 
All sizes and pitches not listed are subject to special prices. 
Left-Hand Hobs arc special. 

SIZES AND PRICES 


Dimeter 

Number of Threads to the Inch 

Lenxth 

Over-all 

Inches 

of 

Hot> 

Incites 

Price 

Each 

V. S. 

Standard 

S. A. E. 
Standard 

Whitworth 

Standard 

y* 

$0.65 

2b 

28 

•20 

23* 

A 

.70 

18 

24 

18 

2 jj 

>« 

.75 

If. 

24 

16 

2H 

A 

.85 

14 

■20 

14 

3A 

■-* 

1.00 

13 

■20 

12 

3?» 

A 

1.10 

12 

IS 

12 

3« 

H 

1.25 

11 

IS 

11 

3K 

U 

1.45 

11 

1G 

11 

4A 

h 

1.70 

10 

1G 

10 

4-. 

H 

1.05 

10 


10 

4H 

n 

2.25 

0 

14. 18 

0 

4 [{ 

}| 

i 

2.50 

9 


9 

4H 

2.80 

s 

14 

s 

5j(j 

l 'A 

3.15 

7 

12 

7 

3 A 

i' 4 

3.65 

7 

12 

7 


i'» 

4.20 

r» 

12 

6 

b A 

\'A 

4.60 

c 

12 

G 

6* 8 

iH 

5.45 

5>* 


5 

6H 

l'a 

5. SO 

5 


5 

7 

1J< 

6.15 

S 


41* 


•> 

6.70 

*X 


4X 

7H 


Note* Short Die Hob9 will be furnished exact size unless otherwise 
specified Oversize or undersize die hobs will be considered special and 
subject to special prices 


Long Die Hobs 


• zr+toi MM kkh li i ♦.‘fflP.V 

X^fnTTmrrmrrm mf ««!«"«* “ 

rrmnrnr! 


United States Standard thread* furnished unless otherwise specified. 
All sizes and pitches not listed art- subject to special prices. 

Left-Hand Hubs art* special 


M 


SIZES AND PRICES 


Diameter 
of Hob 
Inches 

Price 

Each 

Number ol Threads to the Inch 

Lcncth 
Over all 
Inches 

u. s. 

Standard 

S. A. E. 
Standard 

Whitworth 
standard 1 

•4 

$1.25 

a* 

28 

20 

3 K 

A 

1.55 

18 

24 

IS 

4 

J» 

1.50 

16 

24 

16 

4K 

A 

1.70 

14 

20 

14 

5 

4 

1.00 

15 

20 

12 

5K 

A 

2.20 

12 

IS 

12 

6 

I 

2.50 

11 

IS 

11 

6K 

U 

2.85 

11 

16 

11 

7 

« 

5.20 

10 

16 

10 

7.K 

H 

.(.til) 

10 


10 

$ 

H 

4 00 

9 

14.18 

0 

8K 

\i 

4.50 

U 


0 

8>. 

i 

5 00 

8 

14 

8 

9 

lyt 

5.75 

7 

12 

i 

9'r 

IK 

6.50 

7 

12 

7 

OK 

Iff 

7.50 

6 

12 

6 

93. 

IK 

8.50 

6 

12 

6 

10 

It 

0.75 

5i 


5 

10'. 

l>. 

11.00 

5 


5 

10K 

l ff 

12.50 

5 


■»{ 

10'. 

o 

14.00 

4 


41 

11 


Note:—Long Die Hob9 will be furnished exact size unless otherwise 
specified- Oversize or undersize die hidjs will be considered special and 
subject to special prices. 


Metric 

Taps 

Tap 

Wrencher 


Die 

iectfon 

Die 

Stocks 


Screw 

Plate 

Section 




Pipe Hobs 



n 




Rrigg*’ Standard, Right-Hand pipe hob* are furnished unless other¬ 
wise specified. 

Sizes, lengths and threads not listed arc subject to special prices. 
Left-Hand hobs are special. 

SIZES AND PRICES 


Nominal 

Sue 

Inctirt 

PfKV> 

Each 

Number oi Threads to the Inch 

Brutus’ 

StaiularU 

Whitworth 

Standard 

H 

$1.75 

27 

28 

U 

2.SO 

IS 

19 

*» 

2.30 

IS 

1!) 

X 

2.75 

14 

14 

«* 

3.25 


14 

« 

3.25 

14 

14 

H 

4.00 


14 

l 

4.00 

UX 

11 

IX 

5.00 

ux 

11 

IX 

6.60 

nx 

11 

1»4 

8.00 


11 

2 

10.00 

UX 

11 

2', 

12.00 


11 

■2X 

12.00 

8 

11 


18.00 


11 

3 

22.50 

8 

11 

3'« 

25.50 


11 

3X 

30.00 

8 

11 


36.00 


11 

4 

45.00 

8 

11 











Index for Metric Tap Section 

French and International Standards 

Machinists' Hand Tap* ... 

Si-rial (Hard Service) Hand Tap* 

Tapper Taps 
Spindle Stay-Bolt Taps 

Stay-Bolt l aps. 

Short Die Hobs 
Iaing Die Hobs 

Nut Taps. 


Pages 

34-35-39 

37 

, 38-39 

10 

41 

42 


43 

44 


Metric 

Tap* 


01 * 

section 

Dio 

Stock* 


Sc row 
Plate 
Section 












QSwmami 




Tfififrt itittihbi 


Machinists’ Hand Taps 

French and International Standard 

Sim of Shanks Kumi&hcd Regularly 

Full Size Shanks 


Orders for hand tAps to and including S m/m will lie filled with 
tap* having shanks full diameter of thread. Taps 9 in./m and larger 
will he furnished with shanks size of bottom of thread. 


Shanks, the Diameter of Bottom of Thread 




■■BBS 



sn[ : __ ULUiiiiULimuun 






















Hand Taps 


French and International Standards 


35 


Sizes, lengths and thread* not lifted arc subject to prices. 

Left-Hand Taps are special. 


SIZES AND PRICES 


Diameter 
of Tap 
m/m 

Price 

Standard Pit* hr* ni /m 

Each 

Per Set 

French 

International 


2 

SO. 45 

$1.35 

-45 

2.5 

.40 

1.20 

.45 

3 

.40 

1.20 

. 5 lift 

3 5 

.35 

1.05 

(Ml 

4 

.35 

1.05 

75 75 

15 

.35 

1.05 

75 

5 

.40 

1.20 

, 75 90 

5.5 

.40 

1.20 

90 

6 

.45 

1.35 

l.D 1.0 


(Continued on next page). 


International Pitches in size* 2 m m to a 5 m/m inclusive are 
those adopted by the French Navy, Department of War, Railway Top 

Companies, etc., and approved by the society for the advancement of 
National Industries. 

Die 

lection 

Die 

Stocks 


Screw 

Plete 

Section 




Hand Taps 

French and International Standards 
(Concluded) 

SIZF.S AND PRICES 


Price Standard Pitches m/m 


Diameter 






of Tap 





Also 

m/m 

Each 

Per S« 

French 

International 

Furnnhed 

IHfti'nunt Changes Here 

7 

SO.45 

$1.35 

1.0 

1.0 

• • • • 

R 

.50 

1.50 

1.0 

1.25 

.... 

9 

.55 

1.05 

10 

1.25 


Discount Changes Here 

10 

.55 

1.05 

1.5 

1.5 

« • • • 

a 

.00 

1.80 


1.5 


12 

.70 

2.10 

i .5 

1.75 


14 

.80 

2.40 

2.0 

2.0 


in 

.00 

2.70 

2.0 

2.0 


18 

1.05 

3.15 

2.5 

2.5 

i.s 

20 

1.40 

4.20 

2.6 

2.5 

,,,, 

22 

1.00 

4.80 

2.5 

2.6 

• . • . 

24 

1.80 

5.40 

3.0 

3.0 

• • • • 

20 

2.0# 

0.00 

3.0 

.... 

a .. . 

Discount Changes Here 

27 

2.25 

0.75 


3 0 


28 

2.25 

6.75 

3.0 



.10 

2.00 

7.80 

3.5 

3.5 


32 

2.00 

7.80 

3.5 



33 

.1.00 

9.00 


3.5 


34 

1.00 

9.00 

3'5 



30 

3.5# 

10.50 

4 0 

4.0 


38 

3.50 

10.50 

4 0 

• • * t 


39 

4.20 

12.00 


4.0 


40 

4.20 

12.00 

4 0 



42 

4.20 

12.00 

4.5 

4 5 


44 

5.00 

15.00 

4.5 



45 

5.00 

15.00 


4.5 


40 

5.80 

17.40 

4 5 



48 

5.80 

17.40 

SO 

5.0 


SO 

0.70 

20.10 

so 

.... 














Serial Hand Taps 

French and International Standards 

Serial Hand Taps are furnished with shanks lull size of thread .17 

from 6 m/m to S m/m inclusive and with shanks si/e of 1mi( torn of 
thread on 9 m/m and larger. 

Sizes, lengths anil threads not listc 1 are subjer t to special prices. 

Left-Hand Taps arc special. 

SIZES AND PRICES 


Prxe Sdn«UM Pitch*** m/m 


Diameter 





of Tap 





m/m 

Each 

Per Set 

French 

International 

1 . 

SO. 45 

$1.55 

1 0 

1 0 

7 

.45 

1.55 

1 0 

1 0 

8 

.50 

1.50 

1 0 

1 25 

9 

.55 

1.65 

1.0 

1 25 

10 

.55 

1.65 

1 5 

15 

11 

.00 

1.80 


15 

12 

.70 

2.10 

1 5 

1 75 

14 

SO 

2.40 

2.0 

2 0 

16 

.00 

2.70 

2 0 

2.0 

IS 

1.05 

5.15 

2 5 

2.5 

20 

1.40 

4.20 

2 5 

2.5 

22 

1.60 

4.80 

2.5 

2 5 

24 

1.80 

5.40 

3.0 

3.0 

26 

2.00 

6.00 

3 0 



Discount ('.han&en Here 


27 2.25 

6.75 


3 0 

28 2.25 

6.75 

3.0 


30 2.60 

7.80 

3.5 

3^5 

32 2.60 

7.80 

3.5 


33 3.00 

9.00 


T5 

34 3.00 

9.00 

3 5 


36 3.50 

10.50 

4 0 

4 0 

38 3-50 

10.50 

4 II 



Tap 

Wrnnches 


DU 

lection 


DU 

Stocks 


Screw 

Plate 

Section 




Spindle Stay-Bolt Taps 

French and International Standards 



Taps shorter than 8’inches will be charged as ifjs inches long, and 
fractions of an inch in length will be charge I as a full extra inch. 

Spindle Stay-Bolt Taps having the following proportions have been 
found by experience to answer for the average requirements. 


Length overall 7*6' 

Length of fluted Thread .3>«'* 

Length of unlluted Thread.. . 

Diameter of Spindle. H' 

Length of Spindle . II' 


SIZES AND PRICES 


Diameter 
of Tap 
m/m 

Price 

Diameter 
of Tap 
m/m 

Price 

For a Tar- 
Tty- tains 

Per Inch 
tor Ocher 
Lens tin 

For a Tap 
V!i‘ Lons 

Per Inch 
for Other 

14 -rwt hs 

20 

$8.40 

$1.05 

i 

$10.80 

*1.35 

22 

8.80 

1.10 

32 

11.20 

1.40 

24 

9.20 

1.15 

33 

11.Id) 

1.45 

26 

9.1.0 

1.20 

34 

12.00 

1.50 

27 

10.00 

1.25 

3fi 

12.40 

1.55 

2X 

10.40 

1.30 

38 

12.80 

1.1.0 















Slay-Bolt Taps 


Taps shorter than 16 inches will I*? charged as if 16 
inches long, and fractions of an inch in length will l*c 
charged as a full extra inch. 

All metric Stay-Bolt Taps are special, and discount 
de(M*nds upon the quantity ordered. 


SIZES AND PRICES 


Diameter of 
Tap 
m/m 

Price 

Per Inch 

Diameter of 
Tan 
m/m 

Prte 

Per Inch 

ao 

$0.40 

no 

$0.55 

22 

.40 

32 

.55 

•24 

.45 

33 

.60 

20 

.45 

34 

.60 

27 

.50 

36 

.70 

28 

.50 

38 

.70 


41 


Tap 

Wrn«vch»a 


Ota 

taction 


Ola 

Stocks 


Screw 

Plate 

Soction 



Short Die Hobs 

French and International Standards 




^nmwmmwirnr 

<WUUt44W«tUt(U( 


Sizes, lengths and threads not listed are subject to special prices. 
Left-Hand Hobs are special. 


SIZES AND PRICES 


Diameter 
of lloh 
m/m 

Price 

Each 

Standard Pitchei m/m 

French 

International 

<) 

SO.65 

1.0 

1.0 

7 

.65 

1 0 

1.0 

S 

.70 

1 0 

1 25 

<> 

.75 

1 0 

1 25 

10 

.75 

1 5 

1 5 

II 

.85 


1 5 

12 

1.00 

1.5 

1 75 

14 

1.10 

2 0 

2 0 

10 

1.25 

2 0 

2 0 

IS 

1 45 

2 5 

2 5 

20 

1.95 

2.5 

2.5 

22 

2.25 

2 5 

2.5 

24 

2.50 

3.0 

3.0 

20 

2.80 

3.0 


27 

3.15 


3,0 

28 

3.15 

3.0 

, , , 

30 

3.65 

3.5 

3.5 

32 

3.65 

3.5 


33 

4.20 


3.5 

34 

4.20 

3.5 


38 

4.60 

4 0 

4 0 

3S 

4.60 

4.0 



Long Die Hobs 

French and.lnternational Standards 







43 


Sizes, lengths anil threads not listed arc subject to special prices. 
Left-Hand Hobs an* Sf>«?cial. 


SIZES AND PRICKS 


Si^ml.iitl Pitt h m/m 


Diameter 
of Hot* 

Pr** 

Frt« h 



m/ni 

French 

International 

6 

$1.25 

1 0 

1 0 

7 

1.25 

1.0 

1.0 

H 

1.35 

1 (1 

1 25 

0 

1.50 

1.0 

1 25 

10 

1.50 

i 

1.5 

11 

1.70 


l 5 

12 

1.90 

1 5 

1 75 

14 

2.20 

2 0 

2.0 

10 

2.50 

2 0 

2.0 

18 

2.85 

2.5 

2.5 

20 

3.60 

2 5 

2.5 

22 

4.00 

2 .5 

2.5 

24 

4.50 

2 0 

3.0 

20 

5.00 

3.0 


27 

5.75 


3.0 

28 

5.75 

3 0 


20 

6.50 

3 r, 

3.5 

22 

6.50 

3 5 


33 

7.50 


3.5 

24 

7.50 

3 5 


20 

8.50 

4 0 

4'6 

28 

8.50 

4 0 



Tap 

Wrenchot 


DU 

section 

DU 

Stocks 


Screw 

Plate 

Section 









44 




Nut Taps 

French and International Standards 


Sires, lengths and threads not listed are subject to special prices. 
Left-Hand Taps are special. 


SIZES AND PRICES 


Standard Pitches m/m 


Diameter 
of Tap 
m/m 

P.V« 

Each 

Punch 

International 

6 

$0.60 

1.0 

1.0 

7 

.60 

10 

1.0 

8 

.70 

1.0 

1 25 

9 

.80 

1.0 

1.25 

in 

.80 

1.5 

1.5 

M 

90 


1.5 

12 

1.00 

i.5 

1 75 

14 

1.15 

2.0 

2.0 

If. 

1.2$ 

2.0 

2.0 

IS 

1.60 

2.5 

2.5 

20 

2.15 

2.5 

2.5 

22 

2.45 

2.5 

2.5 

24 

2.80 

3.0 

3.0 

20 

$.15 

3.0 

, k . 


IKsomnf ( huniin Here 


27 

3.7* 

3 0 

28 

$.70 

3.0 

30 

4.50 

3.5 3.5 

32 

4.50 

35 

33 

5.50 

3.5 

31 

5.50 

3.5 

36 

6.75 

4.0 4.0 

38 

6.75 

40 

30 

8.00 

4.0 

40 

8.00 

4 0 

42 

8.00 

4.5 4 5 

44 

9.25 

4 5 

45 

0.25 

4 5 

40 

10.75 

4.5 

4S 

10.75 

5.0 5 0 

50 

12.25 

5 ft 


Typo of No. 2-3-4 



Tap Wrenches 

A strong ami convenient tap wrcm h 
at a reasonable price. 

The ljcidy is a drop f*»rginu 
The adjustment is very simple and 
satisfactory. 


NmnlH-r 

I'tkO 

Each 

Siir» of Ian th .11 

Wo n. ii 1 nidi 
Inches 

I.i-nutli 
Over-all 
Inches 

1 

$1.5(1 

iV to 1 

7 

2 

3.50 

1 *0 i 

II 

3 

4.(Ml 

1 to . 

10 

4 

5. IK) 

i to 1 

21 

3 

8.00 

i to IS 

34 


No. 3 holds pi|>e taps Jj' to './ 
No. 4 holds pipe taps 1 n" to a" 
No. ij holds pipe tap* to I 



T vpe of N" I 










Index to Die Section 


47 



Adjustable Round I lies 

Outside 

Diameter 

Machine Screw Sizes 
U' Fractional Sizes 

I' French and International Standard 

lft' 

l*a’ Fractional Sizes 

1,\* French and International Standard 

I>t* 

2 * 

2 J- 4 * Fractional Sizes 

2'i” French and International Standard 

3* 

Solid Square Bolt Dies 
Solid Square Pipe Dies 
British Association Standard 
Spring Screw Threading Dies 
A. S. M. E. Standard 
If. S. Standard 
5. A. I Standard 
Whitworth Standard] 

French and International standard 
Adjustable Round Die* for Pipe 


l*agc 
. 48 

19 

56 

50 

50-57 


51 

57 

53 

54 

55 

58 

.59-00 

01-02 

04 


Ole 


Section 


Ole 

Stocks 


Screw 

Plot# 

Section 






Adjustable Round Split Dies 

Machine Screw Strr*. A. 5. M. E. Standard. 


Ouividr Dtametm 



Adjusting Screw 


Without 
Adjusting Screw 


All sizes and threads not listed are special and subject trt special prict-s. 
Dies with Left-Hand threadbare special. 

Reatl page 105. 


SIZES AND PRICES 



< ’liW'1' 

r Dlamrii-f, I’rii i 

■ Ea< h. 

No. «»• Ttiimib n» 11»»* l»i ti 

* «auur 
N». | 

* s j.” Dwim-ti'. 

■ ," Thick 

Diameter 

Thick 

1 " ni.metri 
V Thkk 

S.nnikmJ 

Threw), 

iilu 

I r unu5hwl 

0 

SO.MO 

$0.90 


NO 

64, 545 

I 

.80 

.90 


72 

•1 

.70 

SO 


04 

60 

3 

.00 

.70 


50 

4S 

4 

SO 

.00 


4H 

314. 40, 32 

5 i 

.SO 

.00 


44 

90.40 

ft 

.50 

.60 

$0.75 

40 

32.36 

t 

.50 

.60 

.75 

36 

30.32 

s 

.50 

.60 

.75 

36 

30. 32, 40 

ft 

.50 

60 

.75 

32 

24, 30 

Kl 

.50 

.60 

.75 

30 

24, 32, 28 

12 

.50 

60 

.75 

2s 

24, 32 

W 

.50 

60 

.75 

24 

20 

Hi 


.60 

.75 


20, IS 

IS 


.60 

.75 

20 

IS 

20 


.60 

.75 

20 

IS. 16 


For the best results, c*f*-ctall> in automatic *crew machine work, wc 
strongly advise against tiding i" diameter die> to cut larg« rthan No. S, 
iJ" die* to cut larger than No. 12,or I M dies to cut larger than No. 1ft. 

* diameter dies are furnished without adjusting screw only. 



With Without 

Adjusting Screw Adjusting Screw 

United States Standard fitrm *>f thread furnished link** otherwise 
specified. 

Sizes and threads not listed are subject i«> spei ial prices. 

Left-Haml Dies are special. 

Read jxigc 105. 

SIZES AND PRICES 

Outside Diameter Numbrr oi Thtrads to llu* Inch 



Price hath 





Other 

Cuitinu 





Xuni|.ii4t I'Usli.u 


1 It.S. 

Sire 1 

t K" 

i 





lM4flll 

1 IK Ill’S | 

Diam. 

Thick 

1 Diam. 

1 V' 

Thick 

Diam 

>»" 

Thick 

n. s. 

St'4. 

S \ K 
St d. 

Whit¬ 

worth 

St ‘ft. 

British 

>Hri 

Fine 

Tti reads 

Fur- 

nhlird 

A 

$9.SO 

$0.«N> 


tvi 


(30 


72 

' i 

.70 

.NO 


410 




72 

A 

4.0 

.70 


54) 


4S 


4.S 

«\ 

.SO 

.60 


4s 





H 

.50 

.00 

SO.75 

Ml 


414 


32 

A 

.50 

.60 

.75 

441 






.50 

.60 

.75 

;»i 


32 


32 

1} 

.50 

.60 

.75 

32 





A 

.544 

.60 

.75 

24 


24 


32 

I ' 

1! « 

.544 

.60 

.75 

24 





7 
,: 

.50 

.60 

.75 

24 


24 


32 

i 

•; < 

.544 

.60 

.75 

24 






.544 

.60 

.75 

20 

28 

30 

2ti 

24,27.32 

A 


.60 

.75 

IS 

24 

IS 

<>•> 

20.27,32 

3 * 



.75 

141 

'24 

141 

20 1 

20,27 

A 



.75 

14 

21) 

14 

!8 

24,27 


For the best results, esjH^cially for automatic screw machine work, 
we advise against the use? of diameter dies to cut larger than J. {", 
W” die* to cut larger than J and 1" die* to cut larger than J". except 
for fine pitches. 

* |" diameter dies are furnished without adjusting screw only. 


49 


Dl« 

Stocks 


Sc row 
Plate 
Section 




Adjustable Round Split Dies 

Fractional Sizes 



United States Standard form of thread furnished unless otherwise 
specified. 

All sizes and threads not listed are special. 

Dies with Left-Hand thread* are special. Read page 105. 


SIZES AND PRICES 


Cut- 
tin« 
Site 1 
Inch 

| Outside Diameter— Price l« 

Number of Thread* to the Inch 

1A' 

Diam¬ 

eter 

& 

'V 1A* 

Dcini Diam¬ 
eter eter 

E 

Thick Thick 

IV 

Diam¬ 

eter 

tVU 

1 U.S. 

S<d 

Standard Pitches 

I S.A. Whit- 1 British 
E- ' north Sid. 

i' BtlL Fine 

1 Other 

U s 

Threads 

also 

Fur¬ 

nished 

X 

$1.25 

$1.25 $1.50 

$2.00 

20 

2H 

20 

20 

24,27,32 

A 

1.25 

1.25 1.50 

2.00 

IS 

24 

1 18 

22 

20,27,32 


1.25 

1.25 1.50 

2.00 

10 

24 

10 

20 

20,27 

A 

1.25 

1.25 1.50 

2.00 

1 14 

20 

14 

IS 

24,27 

X 

1.25 

1.25 1.50 

2.00 

13 

20 

12 1 

10 

12,2457 

A 


1.25 1.50 

2.00 

12 

18 

12 

10 

27 

H 


1.25 1.50 

2.00 

11 

18 

11 1 

14 

12.27 

H 



2.00 

11 

10 

11 

14 


1 



2.00 

10 

1 

10 

1 10 

12 

12,27 


Except for fine pitches, dies of the above diameters should not be 




Adjustable Round Split Dies 

Fractional Sizes 




With or Without Adjusting Screw 
Outside Diameters 

2” j>*/' 2 M” 3" 

United States Standard form of thread furnished unless otherwise 
specified. 

All sizes and threads not listed arc special 

Dies with Left-Hand threads arc special. Read page 105. 

SIZES AND PRICF.S 



Outside Dumetrr—Pan 

e Each 

N 

umber of Thread- 

t to the 

Inch 

Cut¬ 

ting 

2" 

2'/' 

21 •/* 

3" 

Standard Pitches 


other 

11 s 

Sire 

Inch¬ 

Diiim- 

OtM 

Diam¬ 

eter 

Dten 

eter 

Diam¬ 

eter 





ThreucK 

.1 

es 

s i" 

V* 

V 

1'*" 

Its 

S. A 

Whit¬ 

itntivli 

•040 

Thick 

Thick 

Tl.l. k 

Thick 

s. 

Mil. 

E 

worth 

SKI 

niched. 






ski 

Sid 

1-1 ru' 

‘4 

$2.00 

$.1.00 



30 

2S 

90 

20 

24,27,32 

A 

2.00 

.L00 



IS 

24 

IS 

2*2 

20,27.32 

** 

2.00 

.L00 



10 

24 

Ifi 

20 

30,27 

A 

2.00 

3.00 



14 

20 

11 

IK 

24.27 

X 

2.00 

3.00 

$3.00 


13 

i JO 

12 

10 

12,24,27 

A 

2.00 

3.00 

3.00 


12 

18 

12 

10 

27 

a 

2.00 

3.00 

3.00 


11 

1 ,s 

11 

14 

12,27 

ti 

2.00 

3.00 

3.00 


11 


11 

14 


i. 

2.00 

3.00 

3.00 


10 

1 1,1 

10 

12 

12,27 

It 

2.00 

3.00 

3.00 


10 


10 

12 


H 

2.00 

3.00 

3.00 

$5.00 

g 

14.18 

g 

It 

12.27 

H 


3.IMI 

3.00 

5.N 

g 


g 



r 


3.00 

3.00 

S <H> 

8 

14 

s 

10 

12,27 

1 H 




5.00 

7 

12 

7 

g 


i' 4 




5.00 

7 

1 >j 

7 

9 


Ok 




5.00 

6 

1 12 

0 

8 


1 H 




5.00 

fi 

12 

« 

8 



Except for fine pitches, dies of the above diameters should not In 
used to cut larger sizes than as follow*: 2"—J", 2J"—2J" 1", 

3"—1J", 


51 


DU 

Stocks 


Screw 

Plate 

Section 




52 


Solid Square Bolt Dies 



U. S. Standard thro id only will be furnished regularly. 


All sizes ami thread* not listed arc special, and subject to special 
prices. 


Left-Hand Dies are special. 



Solid Square Bolt Dies 


SIZES AND PRICES 


Cut unit 


No. oi Tliwailo 

Si*- 

T flick nem 

1 in hex 

Sue 

Price tlach 

to tin loch 

of Square 

Inclun 


('. S. St.irvl.iTii 

IikIii'M 

K 

$1.80 

•20 

2'i 


ft 

1.80 

IS 

2'j 


*» 

1.80 

10 

Vi 


l 

r* 

1.80 

14 

2', 

h 

k 

1.80 

13 

Vi 

'■i 

♦ 

r» 

1.90 

12 

Vi 

'a 


2.00 

11 

2'j 

•^l 

u 

2.10 

11 

2K 

•*4 

*4 

2.20 

10 

Vi 

*4 

It 

2..10 

10 

Vi 

K 

H 

2.40 

9 

2K 

k 

ii 

14 

2.55 

9 

Vi 

'i 

I 

2.70 

S 

2K 

i 

i yi 

,100 

7 

2 >i 

i 

IK 

■1.30 

7 

Vi 

i 

i J » 

3.60 

6 

Vi 

i 

IK 

3.00 

0 

3 

i 

l H 

420 

5K 

3 

i 

IK 

5.40 

5 

3 

IK 

l H 

b.50 

5 

3K 

IK 

2 

7.50 

4K 

Vi 

n 


DU 

Stocks 


Sc row 
Plate 
Section 





Solid Square Pipe Dies 



Left-Hand Dies are Special 

SIZES AND PRICES 


Size of Square. Thickness. Price Each 


Si k 

Pipe 

Inches 

1 

Square 

Thick 

i2 j"and 21" 

v -| l.l ' ' 

V Thick 

21" and 3" 

tfvjuair 

1 M Thick 

132“ Square 
l ' -»r*i 1" 
Thick 

4 " Square 
1" and I" 
Thurk 

■V' 

Square 
IJ" Thick 

» 

$1.80 

$1.80 





i 

I.W 

1.90 





i 

2.10 

2.10 





i 

2.40 

2.40 

$3.10 




i 


3.00 

3.45 




i 


3.60 

3.75 

$5.00 

$5.00 


n 



5.40 

6.50 

6.50 


u 




7.50 

7.50 


o 




8.50 

8.50 


2} 






$12.50 

3 






15.00 


Furnished regularly in right hand. Briggs'standard only. 

The diameter of these dies at the small end is such that the Briggs' 
Standard Plug Gauge will screw approximately flush with the face of 
the die. 

See round dies for pipe, page 54. 



Adjustable Round Split Dies 


British Association Standard 



With Adjusting Screw Without AdjuMlnu Screw 


Sizes, dimensions and threads not listed are subject to special 
prices. 

Left - hand dies are special. 

SIZES AND PRICES 


Outside Di.imcter — Price Each 


Number 

inch 

H in> ii 

I M.IIT|.-llT 

mm 

I'itcli, mm. 

0 

*0.50 

$0.60 

ft 0 

1 00 

1 

.50 

.60 

53 

90 

*> 

.50 

.60 

4 7 

.81 

3 

.50 

.60 

4 1 

73 

4 

.50 

.60 

3 ft 

Oft 

5 

.50 

.60 

3 2 

59 

ft 

.50 

.60 

2 8 

53 

7 

.50 

.60 

2 5 

48 

8 

.50 

.60 

.» .» 

43 

0 

.50 

.60 

1 9 

39 

10 

.50 

.60 

1 7 

35 

12 

.70 

,H0 

1 3 

28 

14 

1.00 

1.10 

1 0 

.23 


{ rr diameter die* are furnished without adjusting screw only. Stocks 


Screw 

Plate 

Section 



Adjustable Round Split Dies 

French and International Standards. 

iV'-l V'-liV outside diameters. 

Sizes, dimensions and threads not listed are subject to special 
prices. 

Left-hand dies are special. 



SIZES AND PRICES 


Cuttini: 

Size 

mm. 

Stand'll Pitch 
mm. 

Outside Diameter — Price Each 

_. Interna- 

l ' rrnch tKjn.il 

•H" 

JO" |" 

IV 

IV 

... 

If* 

2 

45 

$0.70 

$0.8# 





2.5 

45 

.60 

.711 





3 

50 .60 

.50 

.(>0 





3.5 

.00 

.50 

.50 

50.75 




4 

.75 .75 

.50 

.50 

.75 




4 5 

.75 

.50 

.(>0 

.75 




5 

.75 90 

.50 

.50 

.75 




5 5 

90 

.50 

.50 

.75 




r> 

1 0 10 

.50 

.50 

.75 

11.25 

$1-25 


7 

10 10 


.50 

.75 

1.25 

1.25 


8 

1 0 1.25 


.50 

.75 

1.25 

1.25 


0 

10 1 25 



.75 

1.25 

1.25 

$1.50 

10 

1.5 15 



.75 

1.25 

1.25 

1.50 

11 

1.5 



.75 

1.25 

1.25 

1.50 

r.> 

1.6 1.75 




1.25 

1.25 

1.50 

14 

2.0 2.0 



... 

.». 

1.25 

1.50 

10 

2.0 2.0 





1.25 

1.50 


(Continued 

on next page.) 





Cuts of these dies are shown on pages 4S to 51. 
Furnished regularly with or without adjusting screw. 

* *s r dies arc furnished without adjusting screw only. 






Adjustable Round Split Dies 

French and International Standards 



1' i"-2" 2 1 *" 2>j"-3" Outside Diameters 

Sizes,dimensions and threads not listed arc subject to special 
prices. 

Left hand dies are special. 




SI7.F.S AND 

PRICES 



■It III**; 

Si/e 

mm 

! S<.in«lar*l I'itche* 
mm 


< Diameter — 

Price Kadi 

l ; rencli 

Inti- 

luttHinal 

IV' 

•y* 

3 V 

3<j" 


9 

1 0 

1 25 

$ 2.00 





in 

1 5 

1 5 

2.00 





u 


I 

2.00 





12 

1 5 

1 75 

2.00 

$ 2.00 

$ 3.00 

$ 3.00 


14 

| 2 0 

2 0 

2.00 

2.00 

.t.oa 

3 00 


Hi 

2 0 

2 0 

2.00 

2.00 

too 

2.09 


MS 

2 8 

2 5 

2.00 

2.00 

3.00 

t.OO 


20 

•) !* 

2 5 

2.00 

2 on 

3.00 

3.00 


22 

25 

2 5 


2 00 

< 00 

3.00 

$ 5.00 

24 

3 0 

3 0 



t.OO 

.UK) 

5.00 

2ti 

3 0 




.too 

3.00 

5.00 

27 


3 0 





5.00 

2S 

3 0 






5.00 

30 

3 S 

3 5 





5 00 

32 

3.5 






5.00 

33 


3 5 





5.00 

34 

3 5 






5.00 

3tl 

4 0 

4 0 





5.00 

3S 

4 0 






5-00 


‘This size is also furnished in 1 5 Pitch at regular prite. 
Cuts of these ilies arc shown on |uges 48 to 51. 
Furnished regularly with or without adjusting screw. 


57 


Dio 


Stocks 


Screw 

Plate 

Section 


illlisiis 



Spring Screw Threading Dies 

Machine Screw Sixes 


A S. M E. Standard 



We believe that this is the best style of die for machine use. 

They are easily adjusted and sharpened, and will average to cut 
thread* better in form, lead and finish, than any other kind of die. 
Clamp collars are not furnished with dies unless ordered. 

I .eft-hand Dies are special. 

When die* are for u*c on bra** exclusively, order* should >o specify. 


SIZES AND PRICES 


Screw' 

Change 

No. 

Outside 

Diameter 

1 Incite* 

l.enxth 

Price Kaeii 

No. ol Threads Per Inch 

Die 

t lamp 
Collar 

Stati-JarO 

Thieada 

a6o 

F uraiahed 

2 


IK 

$1.80 

'0.50 

(14 

56 

3 

A 

IK 

1.80 

.50 

56 

48 

* 

a 

IK 

1.65 

.50 

4S 

32. 36, 40 

s 

A 

IK 

1.50 

.50 

14 

36. 40 

6 

A 

IK 

1.50 

.50 

40 

32. 30 

X 

A 

IK 

1.50 

.50 

86 

30. 32, 40 

8 

A 

!>♦ 

1.75 

.60 

86 

30. 32, 40 

10 

A 

IK 

1.75 

.60 

80 

24, 28. 32 

12 

A 

IK 

1.75 

.60 

2S 

24. 32 

1-1 

A 1 

i A 

1.75 

.60 

24 

20 


(Continued on next page) 


Spring Screw Threading Dies 


59 



Fractional Size* 


U- S. Standard Threads sent unless otherwise specified, 
Left-Hand Dies art* special. 


Cutting 

Six* 

Outside 

Diameter 

Lenitt h 
Overall 

in. ■ 

k.|. It 

No. of TluraiU to cId- Inch 


CUni|> 

Collar 

u. & 

S. A. E 

Whit¬ 

Inch?* 

Inches 

Inches 

Die 

^anti- 

aril 

Stand- 

alii 

worth 
Stan U 

H 

H 

1 *4 

$1.50 

$0.50 

40 


40 

-K 

1 4 

)4 

t 1 4 

1.50 

.50 

•24 

— 

24 

1 4 

I 4 

V, 

1.75 

.(>0 

20 

2H 

20 

A 


1 *4 

1.75 

.00 

IS 

24 

18 

Ji 

•*4 

n. 

1.75 

.00 

16 

24 

10 

A 

1 

2 

2.00 

.70 

18 

24 

IS 

j» 

1 

0 

2.00 

.70 

16 

24 

16 

A 

1 

2 

2.00 

.70 

14 

20 

14 

4l 

l!« 

2>j 

2.00 

.SO 

16 

24 

16 

A 


2 A 

2 00 

SO 

11 

20 

14 

A 

l'* 

2 A 

2.00 

.so 

13 

20 

12 

% 

I * 

1 U 

2 A 

2.(Ml 

.so 

12 

IS 

12 

M 

1)4 

2 A 

2.00 

.so 

11 

18 

II 


Clamp Coll 


lars arc sent only 


when order so specifies. 


(Continued «»n next page ) 


Die 

Stock* 


Screw 

Plate 

Section 





Spring Screw Threading Dies 


Fractional Sizes 


l Concluded ) 


Cutting 

Sur 

Inches 

Outside 

Diameter 

Incises 

Length 

Over-all 

Inches 

Hike Bach [ 

S'umber of Threads to the Inch 

ni Clamp 

^ Collar 

U. S. 
Stand¬ 
ard 

S. A. E. 
Stand¬ 
ard 

Whit¬ 

worth 

Stan’d. 

7* 

i»« 

2 <4 

$2.40 $1.0# 

13 

20 

12 

* 

U» 

2'i 

2.40 1.00 

12 

18 

12 

5 i 

Us 

2'.. 

2.40 1.00 

11 

IS 

11 

K 

Uh 

2'.. 

2.40 1.00 

11 

10 

11 


Us 

2‘j 

2.40 1.00 

in 

10 

10 

So 

Us 

2‘. 

2.75 1.00 

ii 

IS 

It 


Us 

2'j 

2.75 1 .(Ml 

Ki 

10 

10 

»» 

Us 

2»i 

2.75 1.00 

•i 

11.18 

0 

'« 

2 

3 

3.50 125 

Id 

10 

10 

r» 

o 

3 

3.50 1 25 

o 

14, IS 

<1 

1 

o 

3 

3 50 1 25 

s 

14 

s 

1 >H 

o 

3 

3.50 1.25 

4 

12 

7 

1 

2', 

3'j 

6.00 2.00 

8 

14 

s 

1‘4 

2U 

3'.. 

6.00 2.(Ml 

7 

12 

7 

1'. 

2*j 

3 ' i 

6.00 2.(Ml 

i 

12 

7 

Us 

2'j 

3'j 

6.00 2.(Ml 

ti 

12 

0 

1 '» 

■2‘j 

3', 

6.00 2.<M1 

0 

12 

6 


Clamp collar* arc **•»! only when order so specifics. 



Spring Screw Threading Dies 

French and International Standards 



These Dies arc adjustable by mcan< of a < lamp Collar. This 
Clamp Collar is not furnished w ith the dies unless so ordered. 

Sizes, lengths and threads not listed are subject to special prices. 
Left-hand dies are special. 

SIZES AND PRICES 


Price Each Suit* Ian I Pit* li m m 


< uttmit 

Su>* 
m { ni 

i HjuUie 
Diameter 
Inches 

length 
i K’rrall 
lnche» 

Die 

< lamp 
Collar 

French 

Internatiunal 

0 

h 

1*4 

$1.75 

so.no 

1.0 

1 0 

7 

*. 

1*4 

1.75 

.60 

1.0 

1 0 

S 

*4 

1*4 

1.75 

.60 

1 o 

125 

0 

*4 

1*4 

1.75 

.60 

1 <1 

1.25 

10 

>4 

1*4 

1.75 

.60 

1.5 

1.5 

s 

1 

2 

2.00 

.70 

1.0 

1 25 

9 

1 

2 

2.00 

.70 

1.0 

1 25 

10 

1 

2 

2.00 

.70 

1 .5 

1 5 

11 

1 

•i 

2.00 

.70 


1 5 


• List concluded on following page) 



French and International Standards 



^ B >Q 

C iQHihSOOiQiQiQSiQiQC • C ^ ~ U5 *C • C 

.s e — — — ©1 ?»*» ©« ^ ^ W M JC f 


7 

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— — ?i ?i ©i r» a» r« — ai ©i re x> :a — — rora — ro -r -r 


X 

U - 

^ J 

0* v 

2 

£ - 

Z 


r 5 o c o o o o « c O © «c rfi tfj ui *r. »r« ir, o o o © © © © © © 
x x x * x o a e c o 'i'i '■‘i »« e e © e t t 5 o a 


ssssssesesxxssssssssssssss 

<n ■■n »« <n •** •*; «*i *r5 *r: *i -c -c-c -c \c i © © «© © 


a: 

fid 

K 


CC rS*£ 


'• '• '• '■ "• 'i N n 'i »> 

a» ©i ©i ©i ©» ©i ©i ©i ©i ©i r© rt rt rr — — ar *V rc :© ?; re f© rt 




JC JC X * * 


*»••-♦% ♦% -..*» n n n *« -< 

— — — — — — — — "i ~> ©•©» ©‘ ©»©> ©i ©i ©» ©> ©j ©j ©i ©i ©i 


S*B 

= * £ 


✓ ©> o«- / srini;©/ 

- — — — ©i ©i ©i © i ©i ai ©i ©i ©i :© ©i ©» ©» ?© ^ t© r© r© t© 


>© 



(Con< ludril) 







VIT’IC have proven (hat hit'll speed 
steel taps and dies, in sonic 
classes of work, are from five to fif¬ 
teen times more efficient than those 
made of carbon steel. 

Tell us the metal you are working 
in, the conditions under which the 
tools are being used, including the 
speed, kind of lubricant and method 
of applying, also whether the tools 
break or wear out. 

Get the benefit of our experience, 
it may pay you. 



Solid Die Stocks 

For Round Solid and Round Adjustable Dies 

Type of stuck furnished in No. 1-2-8-3'i. 



Type of stock furnished in larger sizes. 


L. 






SIZES AND PRICES 


Number 

Outside Diameter 
of Dint 

Ij-nulli os 

Stock 

Pik e Each 

1 

t * 

* K 

• 

SO.75 

2 

ir» 

14 

7* 

1.00 

3 


10' 

1.25 

•1 '4 

1A* 

12* 

1.75 

4 

l'i' 

14' 

2.00 

*X 

1A' 

14' 

2.00 


IV 

22' 

2.50 


2* 

22' 

2.50 

534 

2,V 

30' 

3.50 

6 

2V 

30' 

3.50 

7 

3' 

40' 

0.00 


Adjustable Round Dies for Pipe 

Taper Threads. With Adjusting Screw or Without 

Kieht-Iland Briggs’ Standard Taper furnished regularly. 
Left-Hand Dies arc special. 


Cuttinc 

s»*e 

Pipe 

Indies 

No. of 

Threads 
to (ho Inch 

Outflide Du meter - 

Price Each 


1* IV 

i i’s' la* 

s* 

1 S '** 

2H" 

x 

27 

$0.75 SI. 25 

$1.25 SI.50 

$2.00 

$3.00 

S3.00 

X 

IS 

1.25 

1.25 1.50 

2.00 

3.00 

3.00 

»» 

IS 


1.50 1.50 

2.00 

3,00 

3.00 

x 

14 


1.75 

2.00 

3.00 

3.00 

x 

14 




3.25 

3.25 

1 

lltf 




3.50 

3.50 


Adjustable Guide Die 
Stocks 

ll is very diffii ull to start .1 1 lie 
I rut- if it i* operated ina stork with- 
• nit a guide. and it i- almost ini|»is- 
sil>lc to have solid guides. either in 
the form of collets or part of the die 
stisk. that \\ill lie a g<»"l hi on 
variuus classes of work that must l»e 
threaded. 

The adjustable guide forming 
I tin of these die stocks ran be in¬ 
stantly sec to fit any size within its 
range. 

Price List 

No. 13. Adjustable guide- 
stuck 9" long for dies 
l"diam 

No. II- Adjustable guide 
stock 14" long for dies 
1}" diam. 

No. 15. Adjustable guide 
stock 23" long for dies 
3 li am. 

No 10. Adjustable guide 
stock 27J" long for dies 
2}'' diam • ■ 

No. 17. Adjustable guide 
stock 40" long for dies 
3* diam. 


$ 2.00 

3.25 

4.00 

5.00 






Index to Screw Plate Section 

Machine Screw Sires 



No. ra»e 

1 4», 6”, S”. 10 s *. 12" 08 

2 2**, 3". 4". 6”. 8”, 1ft' 4 , 12 s * . 68 

3 2", 3“, 4 14 . .V 4 , 0”, 8”, 10 s4 , IIK 7 , 12 s4 . ... 08 

4 4", 6 R , 8”, 10”. 12 s4 . 09 

5 4". 0”, 8=, lft 74 , 1ft", 12". 14 s4 , 14 !4 09 

0 2". 3*, 4*. 6 ”, 8", 10*\ 12", 14 s0 . Ii9 

7 2“, 3". 4*. 0*. 8”. 10 s4 , to* 7 , 12 74 , 14”. 14 s4 70 

8 A. 5. M. E. 4 44 .6", 8*. 10", 12 s4 70 

ft A. S. M- E. 2". 3f“. 4«, fl“, 8“, 10», 12“. 14“ 70 

14 12 s4 , 14”, 16", IS 4 ", 20 14 ,20" 71 

14A 12*. 14”, 16", 18 14 ,2ft 14 ,20" 74 

15 1ft", ID", 12 s4 , 14”, 14 s4 , 10", 18", 20", 20" 71 

15A 10". 10”. 12". 14“ 14", 10", IS", 20", 20" 74 

10 A. S. M. E. 12". 14", 16“, 18”, 2ft”, 20" 71 

16A A. S. M. E. 12”, 14", 10”, 18”, 20". 20". . 74 


Fractsonal Sites 

10 l 44 , A". AM” 70 

11 A* 4 , A**. l“. A". A". A ,! . A".!" 70 

12 J". A". J". A“ - 72 

12A j”, A 1 *. I". A" 7;t 

13 A". »V*. 1”. A". i". A" 72 

13A A". A”. I”. A". {"• A" . 78 


(Continued on next page) 









Index to Screw Plate Section—Concluded 


Continuation of Fractional Sizes 


No. 



17 & 17P 

i*. A 1 *. :■*. A", f-... 

75 

18 & I8P 

5". >v. 1". A". S'*. A". 5" 

75 

19 S 191* 

i*. A 1 *. A". 1’*. 5". P 

7.5 

20 & 201’ 

1*. A", i". A'*. J”. A 1 ', i". li". !'• 

70 

23 & 231* 

>'» Jll_ Jin Tv )"» 

70 

24 & 24P 

111 • IS 'll llll >1" '» I". 

1 • 11 ■ 1 • It • 1 < 1 • 1 

70 

Screw Plate* with Two Die Stocks and Two Tap Wrenches 


21 & 21P 

i". A 1 *.A". j u . i 1 " 

7s 

22 & 221* 

!•-. A". 1“. A". 1". A'-, t". H". J ,n 

7s 

2.1 & 2.1 P 

J w . A". V. A 1 *. 4”. 5". i". i"' 

77 

S. A E. Standard Screw Plates for Automobile Repair Work 


17 S. A. E. & I7M 

f. A 5 *. S 34 . A 5 *-1* 

SO 

18 S. A. E. & ISM 

i a . a*,a--, j=*. A". : ,s 

NO 

19 S. A. E. & lOM 

}». A“. J 2 *. A”. 4”. i". 1“ 

Nil 

20 5. A E. & 20M 

1”. A'*. i :< . A 1 *. I**. A", f. H'“. 1" 

si 

23 S. A. E. S 23M 

j", {», i"» 

Si 

24 S. A. E. & 24 M 

}», A". !"• H'*. ?'*• I", l”' 4 

SI 

S. A. E- Standard Screw Plates for Automobile Repair Work, with Two Die 


Slockt and Two Tap Wrenches 


21 S. A E. & 21M 

1 ! *. A 5 *. I s *. A®. 4". I", t“ 

H2 

22 S. A. E. & 22M 

5*. A : *. J*. A : ‘- A'*- »'*• H’*. S’* 

S‘J 

2.1 S. A. E. & 2.1M 

1*. A : *. A”. 4”. ;•*. I'*, l"'* 

s:t 

100 

4‘. O* 3 , S 7 -\ 10 :4 , I0 7 -', 12 !4 , 1 4=", 11 ) 



l 3 *. i 34 , A”. J'*- A 14 . • l". 1'. S. Si .mil. 

S*. A !4 . V‘. A* 4". A". i“.s. A. E Sid. \ 

70 


The letters“P"and **M" imli< ite r» *\ Opiates with plain wolid d« 
stocks; all ocher screw plates listed on this page are furnished with 
adjustable guide die stocks 


67 


Screw 

Plate 

Section 



Thistle Brand Screw Plates 



r 

Round Adjustable Dies 

Solid Die Stocks 

Set No. I 

Price Each 

• r > Taps. -I". S”. It):', jot* 

5 Dies 2" in diameter 
1 Solid die stock 5" long 

1 Tap wrench, capacity ft" — A" $7.80 

Set No. 2 

7 Taps. 2“, 3*', I", 6», S>=. HE'. 12« 

7 Dies i" in diameter 
1 Solid die stock 5" long 

1 Tap wrench, capacity —K" 1*81 

Set No. 3 

St Taps. 2**, 3*', 4“, 5 M . 6 «, S K , 10 -*, 10 «. 12 ! < 

St Dies in diameter 
1 Solid die stock .V' long 

1 Tap wrench, capacity A"—■ 4 " II.Ml 

Die stocks listed on page ti-l. 

Tap wrenches listed on page 45. 



Thistle Brand Screw Plates 



ir 

Round Adjustable Dies 

Solid Dio Stocks 

Set No. 4 


5 Taps, 4", 6“ 8 K . 10», 12“ 

5 Dies (}" in diameter 
1 Solid die stock 7” long 
1 Tap wrench, capacity A"— 

Set No. 5 

8 Taps, 4», 6*. 8*. 10='. UW, 12’-*, 14* 14” 
8 Dies R" in diameter 
1 Solid die stock 7" long 
1 Tap wrench, capacity A”—!< ’ 

Set No. 6 

8 Taps, 2 •*, 3*\ 4“ 6”. 8’=, 10”, 12”. 14“ 

8 Dies H" in diameter 
1 Solid die stock 7" long 
1 Tap wrench, capacity A” V 
Die stocks listed on page 64. 

Tap wrenches listed on page 45. 


i'rv,e Each 


$ 8 .SO 


12.00 


12.00 


69 






70 


Thistle Brand Screw Plates 

H" 

Round Adjustable Dies 

Solid Die Stocks 


Set No. 7 

Pitt Eac 

10 Taps. 2”, :i". I”, 6”. S'-'. 10", 10>:. 12". 14 w , 14" 

10 Dies H" in diameter 
1 Solid the stock 7" long 

1 Tap wrench, capacity A"— Vi" $ 14.00 

Set No. 8 

5 laps A. S. M. E. standard. 4«\ 6*°, 8“, 10”, 12" 

5 Dies hi" in diameter 
1 Solid die stock 7" long 

I Tap wrench, capacity A”—8.50 
Set No. 9 

R Taps A. S. M. E. standard. 2«, 3“. 4". f>«. 8” 10”, 12", 14" 

S Dies H" in diameter 
1 Solid die stock 7" long 

1 Tap wrench, capacity A "—■ *" 12.00 

Set No. 10 

5 Taps. 1*. A", A M . A". P 

5 Dies {}" in diameter 
1 Solid die stock 7" long 

1 Tap w'rench. capacity A” - '*” 8.00 

Set No. 11 

8 Taps, A«, A“ r. A*. A”. A”- A”. I 5 * 

8 Dies " * n diameter 
1 Solid die stock 7" long 

1 Tap wrench, capacity A” —X” 12.00 

Unless otherwise ordered the above screw plates in fractional sires 
will be furnished in U. S. Standard. Whitworth standard threads 
furnished at same prices. 

Die stocks listed on page IV4. 

Tap wrenches listed on page 45. 





Thistle Brand Screw Plates 


Round Adjustable Dies 
Solid Die Stocks 

Set No. 14 

0 Taps. l'J*. 14". lli", IS", 20", 20 * 

6 Dies 1" in diameter 
1 Solid die stock 10" long 
1 Tap wrench, capacity 

Set No. 15 

9 l aps, 10". 10*>, 12". 14" 14". Hi", IS” 20", 20“ 
0 Dies 1" in diameter 
1 Solid die stock 10" long 
1 Tap wrench, capacity — 1 j " 


Set No. 16 

6 Taps A. S. M. E. standard. 12", 14". 16-, IS", 20". 20" 

6 Dies 1" in diameter 
I Solid die stock 10" long 
1 Tap wrench, capacity 1 j"— 1 ." 

Die stocks furnished with above plates listed on page 04. 
Tap wrenches listed on page 45. 


Price Eat ti 


$12.70 


10.20 


12.70 



Thistle Brand Screw Plates 



l" 

Round Adjustable Dies 

Solid Die Stocks 

Set No. 12 

Price Each 

4 Tap*, |», A u 

I Dies I" in diameter 
1 Solid die stock 10" long 

1 Tap wrench, capacity ‘a"— H" $10.60 

Set No. 13 

o Taps, A* 1 ! A”. i*. A". S 14 . ft u 
0 Dies 1" in diameter 
I Solid <lie stock 10" long 

1 Tap wrench, capacity 1 4 ft —13.10 
The die stocks furnished with above plates arc listed on page f»4. 
The tap wrenches are listed on page 4'v 

Tajier laps are furnished with thest ]4at< ^ unless otherwise specified. 
Unless otherwise ordered we will furni-h U. S. standard in all frac¬ 
tional sixes. 

Whitworth standards will be furnished at same prices. 









Thistle Brand Screw Plates 

With Adjustable Guide Die Stocks 





!' 


Round Adjustable Dies 


Set No. I2A 

Price Bacti 

4 Taps l*. A". I". A" 

4 Dies 1" in diameter 

1 No. 13 stock with adjustable guide, 9" long 
1 Tap wrench, capacity — !i" 

Set No. I3A 

r, Taps A 5 *,,V*. 1". A". 8". A” 

0 Dies 1” in diameter 

1 No. 13 stock with adjustable guide, 9" long 
1 Tap wrench, capacity — H" 

The die storks furnished with above plates are listed on page 05 of 
this catalogue. 

The tap wrenches are listed on page 4->. . ... . 

Taper taps are furnished with these plates moles*otherwise specified. 
Unless otherwise ordereil we will furnish U. S standard ««i all 
fractional sites. Whitworth standards will be (iirmsh.il at same |>ru. s. 
Above plates with plain solid die stocks listed on page 72. 


$ 11.'*0 


11.10 













74 


Thistle Brand Screw Plates 

With Adjustable Guide the Stacks 


1 " 

Round Adjustable Dies 

Set No. I4A 


6 Taps I2“, 14*. If.", 18", 20", 20" 

6 Dies 1" in diameter 

I No. 13 stock with adjustable guide, 0" long 

I Tap wrench, capacity W'—'i" 

Set No. I5A 

fl Taps 10", 10”, 12“, 14“, 14“, lfi». 18". 20". 20" 
fl Dies 1" in diameter 

1 No. 13 stock with adjustable guide, 0" long 
1 Tap wrench, capacity U" — H" 

Set No. I6A 

0 A. S. M. E. standard taps 12”, 14“ 1«« IS", 20", 20" 
6 Dies 1" in diameter 

I No. 13 slock with adjustable guide, 0" long 
1 Tap wrench, capacity .*a" 


Price l-.Kti 


$14 no 


17 60 


14.00 


The die stocks furnished with above plates are listed on page 6'* 
The tap wrenches arc listed on page 43. 

Above plates with plain solid die stocks are listed on paSe 71. 



Thistle Brand Screw Plates 

With Adjustable Guide Die Stacks 
or Plain Solid Die Stocks 


Round Adjustable Dies 
Set No. 17 

5 Taps S». A", 2“. A". I'* 

5 Dies 1{" in diameter 

I No. 14 stock with adjustable guide. 14" long 
l Tap wrench, capacity 'a"—)»" 

No. 17P with plain solid die stock 

Set No. 18 

7 Taps 1», A". 2". A'*. A ,! . i" 

7 Dies 1}" in diameter 

1 No. 14 stock with adjustable guide, 14" long 
1 Tap wrench, capacity }"—}" 

No. 18P with plain solid die stock 

Set No. 19 

7 Taps 1». A". I". A 14 . J' 1 . J". !“ 

7 Dies 2" in diameter 

1 No. 15 stock with adjustable guide, 23" long 
1 Tap wrench, capacity }" — l” 40.90 

No. I9P with plain solid die stock 28.40 

The die stocks furnished with above plates arc listed on page64-li.V 
Tap wrenches are listed on page 45. 

Taper taps are furnished with these plates unless otherwise specified. 
Unless otherwise ordered we will furnish U. S. standard. 
Whitworth standard will be furnished at same prices. 


22.40 

20.40 


$18 00 
I <>00 



76 



Thistle Brand Screw Plates 

With Adjustable Guide Die Stacks 
or Plain Solid Die Stacks 


Round Adjustable Dies 

Set No. 20 

Price Each 

9 T»|» p, A", i'*. A". J". A ,: . I". H". i" 

9 Dies 2" in diameter 

1 No. 15 stock with adjustable guide. 23" long 

.1 Tap wrench, capacity —*s" $37.20 

No. 20P with plain solid die stock 34.71) 


Set No. 23 

5 Taps }>’, 5", {■*. i», 1"‘ 

5 Dies 2j" in diameter 

1 No. Hi stock with adjustable guide. 27 J" long 

1 Tap wrench, capacity 1 r"—1" 36.4# 

No. 23P with plain solid die stock 33.5# 


Set No. 24 

7 Taps }”. A”, t”. H". l' n . I’. I"* 

7 Dies 2}" in diameter 

l No. Hi stock with adjustable guide. 27j" long 
I Tap wrench, capacity 1 *"—1" 45.10 

No. 24P with plain solid die stock 42.20 


The die stocks furnished with above plates are listed on pages 0105 
Tap wrenches are listed on page 45. 

Taper taps are furnished with these plates unless otherwise specified. 
Unless otherwise ordered we w ill I urnis.li U. S. Standard. With- 
worth standard furnished at same prices in standard pitches only. 


Thistle Brand 


Screw Plates 



With Adjustable Guide Die Stocks 
or Plain Solid Die Stocks 



Round Adjustable Dies, Two Stocks and Two Tap Wrenches 
Sri No. 25 

Price Esc it 

9|Taps i». A'*. i'\ A”, }'», J". 1“ {*. I"* 

5 Dies 1J" in diameter, l”. A"< A" 1“ 

4 Dies 2' j" in diameter. i m . J’, l" 9 
1 No. 14 stock with adjustable guide, 14" long 
1 No. Hi stock with adjustable guide, 275" long 
1 Tap wrench, capacity — h" 

1 Tap wrench, capacity — 1 " $ 41.00 

No. 25P with plain solid die stock 44.10 

Taper taps of U. S. standard furnished unless otherwise specified. 
Whitworth standard furnished at the same price*. 


Tap wrenches arc listed on page 4.5. 
Die stocks arc listed on pages iVi-65. 













Thistle Brand Screw Plates 

With Adjustable Guide Die Stocks 
or Plain Solid Die Stocks 


78 


Round Adjustable Dies, Two Stocks and Two Tap Wrenches 
Set No. 21 

Price Bach 

7 Taps }=•, A". I". A". i u . I", i" 

5 Die* 11" in diameter, 3*. iV\ l“. A'*' !” 

2 Dies 2" in diameter i". i'° 

1 No. 14 stock with adjustable guide, 14" long 
I No. IS stock with adjustable guide, 23” long 
1 Tap wrench, capacity '< 

1 Tap wrench, capacity l A ”—1” $34.80 

No. 2IP with plain solid die stock 30.10 

Set No. 22 

9 Taps 1-. A“ i", A". l u . A”. S”. H". 3" 

S Dies 1J” in diameter, }“, A 18 , 3 1 '. A". 1“ 

4 Dies 2" in diameter, A u , l". H". 3'° 

1 No. 14 stock with adjustable guide, 14” long 
1 No. 15 stock with adjustable guide, 23” long 
1 Tap wrench, capacity — A" 

1 Tap wrench, capacity •«"—1” 41.30 

No. 22P with plain solid die stock 30-7® 

Die stocks furnished with above plates ate listed on pages 64-f»5. 
Tap wrenches are listed on page 45. 

Taper taps furnished unless otherwise specified. 

Unless otherwise ordered, U. S. standard will lie furnished. 
Withworth standard furnished at same prices. 


Thistle Brand Screw Plates 

For Automobile Repair Work 




Consisting of Machine Screw Sites, 

V or U. S- Standard Sues, 

S. A, E. Standard Sizes. 

Set No. 100 

Price Each 

8 Taps 4*\ 6«, 8*. 10=', 10”, 12=*, 14=*, 14=< 

8 H” dies 4“. 6“ S’=. 10=*, 10”, 12=*. 14=*. 14=* 

7 Taps U. S. S. threads. J», i». A 11 . I". A'*, i 19 . !" 

7 Dies 1J" in diameter, }=', J=*. A 1 *. !'*• A"- J IJ . i" 

7 Taps S. A. E. standard, }*, A ! ‘. i M , A”. }*. A", i'* 

7 Dies 1}" in diameter, J 3 , A* 3“ A™ I”. A 1 *' 

1 solid die stock 7" long 
1 Tap wrench, capacity A”—J” 

1 No. 14 die stock with adjustable guide. 14" long 
1 Tap wrench, capacity }"—$45.80 

Tap wrenches are listed on page 45. 

Die stocks are listed on pages (14, 65, 














Thistle Brand Screw Plates 

For Automobile Repair Work 
With Adjustable Guide Die Stocks 
or Plain Solid Die Stocks 


Round Adjustable Dies 

S. A. E. Standard 

Set No. 17 S. A. E. 

Price Each 

5 Taps }=■, A ! *. i" 

S Dies 1}" in diameter 

1 No. 14 stock with adjustable guide. 14" long 

1 Tap wrench, capacity 1"—J" J18.00 

No. 17M with plain solid die stock 16.00 

Set No. 18 S. A. E. 

7 Taps 1=*, A”. I*. A". I”, A". I 1 ' 

7 Dies 1J" in diameter 
1 No. 14 die stock with adjustable guide 

1 Tap wrench, capacity }"—}" 22.80 

No. 18M with plain solid die stock 20.28 

Set No. 19 S. A. E 

7 Taps J* A ! *. 3 ! \ A". 1*. I". i M 

7 Dies 2" in diameter 

1 No. 15 stock, with adjustable guide, 23" lung 

1 Tap wrench, capacity J"—j" 38.90 

No. 19M with plain solid die stock 28.30 


Die stocks are listed on pages 64-65. 
Tap wrenches are listed on page 45. 



Thistle Brand Screw Plates 

For Automobile Repair Work 
With Adjustable Guide Die Stocks 
or Plain Solid Die Stacks 

Round Adjustable Dies 
S. A. E Standard 


81 


Set No. 20 S. A. E. 


9 Taps }” *=*, {-■*, ft". }». ft'*, S'*, ft”. 1" 

0 Dies 2" in diameter 

Price Bach 

1 No. 15 stock with adjustable guide, 23" long 

1 Tap wrench, rapacity J"—J" 

$37.20 

No. 20M with plain solid die stock 

34.70 

Set No. 23 S. A. E. 


5 Taps }». J' 1 . J'*, 1"'* 

5 Dies 2}" in diameter 

1 No. 16 die stock with adjustable guide, 27}" long 

1 Tap wrench, capacity J"—1" 

30.40 

No. 23M with plain solid die stock 

33.50 

Set No 24 S. A. E 


7 Taps }», ft”. J”. ft”, J”, {'*, 1"'* 

7 Dies 2J" in diameter 

1 No. 10 die stock with adjustable guides. 27}" long 

1 Tap wrench, capacity J"—1" 

45.10 

With extra tap and die 

4*».00 

No. 24M with plain solid die stock 

43.20 

With extra j“ tap and die 

4H.0O 


Die stocks arc listed on pages 04-05. 
Tap wrenches are listed on page 45. 




Thistle Brand Screw Plates 

For Automobile Repair Work 
With Adjustable Guide Die Stocks 
or Plain Solid Die Stocks 



Round Adjustable Dies, Two Stocks and Two Tap Wrenches 


Set No. 21 S. A. E. 

Price Each 

7 Taps }=-. A-'. i : *. A*. I s *. V'- 1“ 

5 Round dies It" in diameter. }*, ,V*. A : *> 1” 

2 Round dies 2” in diameter, j 1 ’, J 1 * 

1 No. 14 die stock with adjustable guide, 14" long 
1 No. IS die stock with adjustable guide, 23" long 
1 Tap wreneh, capacity S"— 

1 Tap wrrench, capacity J"—1" $34.80 

No. 2IM with plain solid die stocks 30.10 


Set No. 22 S. A. E. 

OTaps t». I”. A 30 . J 5 ". A 1 * I *. «'*. 1" 

5 Round die* 1 J" in diameter, J 5 *, yk 3 *. 1 : *. A 1 "' l 50 
4 Round dies 2" in diameter, jV", i 1 *, H“, 1” 

1 No. 14 die stock with adjustable guide. 14“ long 
1 No. 15 die stock with adjustable guide. 23” long 
1 Tap wrench, capacity, i " —J" 

1 Tap wrench, capacity, j"—1" 41.30 

No. 22M with plain solid die stocks 36.70 

Die stocks furnished with above plates are listed on pages &4-05. 
Tap wrenches are listed on page 45. 











Thistle Brand Screw Plates 

For Automobile Repair Work 



Round Adjustable Dies, Two Stocks and Two Tap Wrenches 

Set No. 25 S. A. E. 

Price Rath 

9 Taps }», ft* ft*, J". J", j'*. J«. 1"'« 

5 Round dies 1J" in diameter J,” ft*. J-' 1 , ft", 1* 

I Round dies 2}” in diameter 5”, J }", 1"" 

1 No. 14 die stock with adjustable guide, 14" long 
1 No. 16 die stock with adjustable guide, 27J" long 
1 Tap wrench, capacity }"—5” 

1 Tap wrench, capacity i"—1" $49.00 

No. 25M with plain solid die stocks 44.10 

Die stocks furnished with above plates listed on page* (14-65. 

Tap wrenches listed on page 45. 


83 














Index for High Speed Section 


Page 

Machinists' Hand Taps.86-87 

Nut Taps.88 

Tapper Taps..•.89 

Machine Screw Taps.. , 90-91 

Pipe Taps. 92 

Beaman & Smith Taps , . , . 93 

Shell Taps 91 


High Speed Dies 

Spring Screw Threading Dies ... 95-96-97 

Adjustable Round Split Dies. .98-99-100 












High-Speed Steel Taps and Dies 


85 

We were the first among the tap and die manufacturers 
to make a commercial success of High-Speed Taps and Dies. 

Immediately after the introduction of high-speed steel 
we started to experiment with some measure of success. 

Since that time high-speed steel has been much improved, 
we have gained valuable experience both in working of 
the steel and in the use of the taps and dies made of it, and 
we have a firmly established trade among the best classes 
of tap and die users. 

We have conclusively demonstrated that for many 
kinds of machine work High-Speed Steel Taps and Dies are 
more economical than the cheaper, ordinary grade. 

Operating at the same speed as the ordinary grade 
High-Speed Taps and Dies will be found to give long service, 
and when the operating speed can be increased the gains 
resulting from increased production and the long life of 
the tools much more than compensate for the high first 
cost. 

We have made records of productions increased from 
five to fifteen times by their use. 




High-Speed Steel Machinists’ Hand Taps 

Sizes of Shanks Furnished Regularly in \ ¥ and larger 

Full Size Shanks 



rmrrrnmipi i 




The above style with shanks the full diameter irf thread will be 
furnished in all sizes up to and including ‘a.* 

Exception - 'h* will be furnished with shank* the diameter of bot¬ 
tom of thread when orders so specify, at regular prices. 

Shanks, the Diameter of Bottom of Thread 




This style with shanks the diameter id bottom of thread will be 
furnished in all sizes, J % < ’ ami larger. 

’s* will also he furnished in this style, when specified, at regular prices. 

United States Standard and If. S. Form threads only as per 
list on opposite page, are furnished at regular prices, all other forms 
and pitches are special. 

Left -Hand Taps are special. 

See page llMor table showing the approximate sizes, in decimals, 
of shanks and squares. 






High-Speed Steel Machinists’ Hand Taps 


Diameter 

st,imlar*l Number 
of Threat)* 

V. 8. S 

ISF Thread* 
aUo Furnished 

Price Each 

H" 

441 


541.50 

ft’ 

114i 


.50 

A' 

*4 

32 

.60 

ft' 

'->4 


.7(4 


24) 

28 

.NO 

L * 

IS 

24 

1 00 

>4' 

141 

24 

1.25 

A' 

14 

20 

1.55 

|! r 

13 

20 

1.00 

ft' 

12 

is 

2.50 


11 

IS 

2.75 

H' 

n 

141 

.1.25 

V 

10 

Hi 

.1.75 

H' 

10 


4.50 

V 

a 

14-18 

5.04) 

IS« 

0 


5.80 

i 9 

K 

14 

b.75 

i>»* 

7 

12 

8.75 

i'.’ 

7 

12 

11.04) 

in' 

(> 

12 

15.50 

1 '•»* 

f> 

12 

16.00 


Larger taps of all kind* made to order, the larger sizes being made 
with machinery steel liodies and inserted renewable blades of High 
Speed Meet; also short shell taps of High-Speed steel which can be 
fitted to shanks. Sec pages 92 and 94. 

The length over-all, sizes of shanks and square* of these taps are 
the same a* hand taps listed on |*ages 5-6-7-S. 



High-Speed Steel Nut Taps 



88 



Left-Hand threads are special. 


Diameter 

Standard Number 
of Threads 

U. S. S. 

U. S. F. 
Threads also 
Furnished 

Price Each 

Lencth 

Over-oil 

Inches 

l 


24 

32 

$1.20 

•»! 

i 

20 

28 

1.40 

5 

1 


IS 

24 

1.60 

M 

i 

10 

24 

1.00 

6 


h 

1-1 

20 

2.25 

6! 



13 

20 

2.70 

7 


h 

12 

IS 

.1.25 

71 



11 

IS 

3.89 

S 



11 

16 

4.50 

SI 



10 

16 

5 20 

ft 


i 

10 


6.00 

fi 



0 

14. IS 

7.00 

lit 


i 

0 


8.25 

101 

i 


s 

14 

0.75 

11 

u 

7 

12 

12.50 

11} 


7 

12 

16.00 

12 

>i 

fi 

12 

20.00 

12} 

u 

6 

12 

25.00 

13 


On account of the amount of expensive steel required, and 
the fact that High-Speed steel shows greater efficiency when 
taking heavier cuts than those taken by the top of each thread 
on the long taper of nut and tapper taps, these two styles 
do not show such great gains in proportion to their cost 
as other styles. 



1 ligh-Speed Tapper Taps 


89 



Number ol Thread* 

Price Each 


per i 



eter 


Length* 


U.S.& 

S. A. E. 

11" 

12" 

14" 15" 

i 

30 

28 




a 

18 

24 




] 

16 

24 




A 

14 

20 




< 

13 

20 




n 

r* 

12 

18 




} 

11 

18 




H 

11 

lb 




1 

10 

lb 

Price* 

quoted 

on appli cation 

U 

10 





♦ 


14, IS 




H 

0 





1 

s 

11 




U 

7 

12 




li 

7 

12 




l} 

b 

12 




1J 

6 

12 




li 

5J 





U 

5 





U 

r> 





2 

<4 






See note on the question of efficiency, at bottom of oppo¬ 
site page. 






I ligh-Speed Steel Machine Screw Taps 


When we started to manufacture High-Speed Taps we did not expect 
90 to ilo much with sizes under diameter, thinking that the loss on 

account of breakage would not give a chance to take advantage of the 
long-wearing quality of high-speed steel. While this may be true in 
a few cases, we have learned that many of our best opportunities to 
show large returns are with Machine Strew Taps. 

High-speed steel drill rod, when properly hardened and tempered, 
averages stronger than carbon steel, so in all cases where there has been 
but little trouble from breakage, the use of High-Speed Taps should be 
considered. 

In both our carbon steel and our high-speed lines we have adopted, 
in addition to the recognized standard form, two other styles which 
have been proved by many trials to be particularly adapted to certain 
classes of work. The commonly used form is most suitable for hand 
use. and for most kinds of cast-iron work. 

• For Tapping Steel, or other tough metals, use our special form 
taps designed for this work. 

Do not drill small holes and try to tap a full thread. It rarely 
Happens that over 75% of the full thread depth is required, and usually 
less answers all purposes, and saves much trouble in tapping. 

Do not expect the best results in tapping steel unless you use plenty 
of lard, cot ton-seed or sperm oil. 

High-Speed Machine Screw Taps not listed are made to order at 
special prices We will quote you special discounts, increasing with 
the quantities ordered. 

•See cut and information on page 14. 



High-Speed Steel Machine Screw Taps 
A. S. M. E. Standard 



All sire* an«l threads not listed are special, and subject to special 
prices. 

Left-Hand Machine Screw Taps are special. 

I l i i.i different I ;»?ir| •• 


Jvreu’ (Vauuv 
No. 

Price Each 

A 

Milliard 

S. M. E. 

AI*o Fnrru-lird 

4 

SO.5# 

+5 

32. 36. 40 

5 

.50 

44 

36. 40 

0 

.50 

4U 

32. 36 

7 

.50 

36 

30. 32 

S 

.50 

36 

30, 32, 40 

9 

.60 

32 

34. 30 

10 

.60 

30 

24. 28, 32 

12 

.70 

28 

24, :t2 

14 

.M 

24 

20 


No. 4 to No. tt inclusive are furnished regularly in three flute style, 
larger sues in four flute style. 



High-Speed Steel Pipe Taps 



Price 

Sine 

Price 

With Inserted Chawra 

Sire 

Price 




$1.20 

1 

$ 0.00 

2 

$17.50 

1.80 

11 

14.00 

21 

21.50 

2.60 

H 

21.01) 

21 

22.50 

4 00 

2 

32.00 

21-3 

26.50 

6.00 



31-81 

32.00 




3}4 

43 50 


Extra chasers per set ol 5 (or 2” $9.75 

I’er set of 6 for all larger sizes up to and including 4' $13.50 



See note on "Inserted Chaser Taps" on opposite page. 


3S2SSS 


High-Speed Steel Taps for Beaman & Smith Holders 



93 


Fitting No. I Holder Fitting No- 2 lloWer 


Dam- 

eter 

Thread f> 

Price 

rJi h 

Dum- 

cter 

Thread* 

Price 

each 

S. A. E. 

u. s.s. 

S. A. K. 

ir. s. s. 

1 

4 

2S 

20 

$1.5* 

1 

IS 

11 

$4.2* 

A 

24 

IS 

1.50 

fi 

16 

11 

4.50 

F 

24 

18 

1.6* 

1 

f , 

16 

10 

4.50 

A 

20 

14 

2.30 

ji 


10 

5.15 

! 

20 

13 

2.4* 


14. IS 

9 

6.50 

A 

18 

12 

2.75 

fi 



7.5* 

i 

I 

18 

11 

3.3* 

1 

14 

8 

8.10 





11 

12 

7 

10.50 





1{ 

12 

7 

13.20 


U. S. S. threads sent unless otherwise specified. 
Left-Hand Taps are special- 


Inserted Chaser Taps 

Taps similar to the inserted chaser pipe tap shown on the opposite 
page, give the opportunity for great economy and efficiency in all large 
sizes. 

The cost of new sets of High-Speed steel chaser* is less than that of 
a carbon steel tap, of about 2" diameter; and on sizes as large as 4" 
diameter the cost of a complete inserted chaser tap is les* than that 
of a carbon steel tap. while new sets of chasers of High-Speed steel cost 
only about one-third as much as a solid carbon steel tap We make 
these taps to order to meet all requirements. 




On account of the comparatively small amount of steel required, 
shell taps arc frequently the cheapest style to use for special work. 
There are many eases, especially in fine thread work, where the length 
need not be over one inch for taps as large as sis inches in diameter. 
Shell taps arc made to order only. 


Economical Design of High-Speed I aps 



To effect the greatest economy in the use of High-Speed Steel Taps* 
they should be made a* short as the operating conditions will allow. 
Designs that call for shanks of larger diameter than the thread should 
be avoided, as the price of the tap is determined by the largest diameter. 



High-Speed Steel Spring Screw 
Threading Dies 



While dies of thi-* **tyle cost mor< ih.in oihir*. they offer numernus 
advantages. They are very easily adjusted. They can U readily 
ground, when dull They give ample room for chips and for lubrica¬ 
tion. They will average to produce better work in lead, thread form 
ami finish than any other style of dies. 

In some case*, when* fun* thread* .ire used, die* may be made to cut 
larger sires than we have listed for each outside diameter, but we advise 
that it is important to have dies heavy enough so that the sections will 
not twist under cutting strains 

Clamp collars are not furnished with dies unless ordered 

SIZES AND PRICES 


Price Each No. oi Thread* Her lit l» 

Screw iKiMi.le Length 


Gauge 

No. 

Dwmrtrr 

Inches 

t Kerall 
Indies 

Die 

1 Umi> 
Collar 


Thr^a4* 

460 

Furntobed 

2 

H 

1 *4 

S2.75 

SO.50 

IV4 

.56 

3 

yi 

1*4 

2.75 

.50 

56 

48 

4 

yi 

1'. 

2.75 

.50 

48 

32. 36, 40 

5 

,'i 

IK 

2.75 

.50 

44 

3tj, 40 

6 

H 

1*4 

2.75 

.50 

4D 

32, 36 

8 

H 

1*4 

2.75 

.50 

30 

30, 32, 40 

.8 

H 

1’. 

3.75 

.00 

30 

30, 32. 10 

10 

?4 

1 J 4 

3.75 

.60 

30 

24, 28, 32 

12 

y. 

1>4 

3.75 

.60 

28 

24. 32 

14 


1 

3.75 

.60 

24 

20 


l Conti nurd on next P*x&) 



% 


High-Speed Steel Spring Screw Threading Dies 


Fractional Sizes 


U. S. Standard Threads sent unless otherwise specified. 
Left-Hand Dies are special. 


Cutting 

Outside 

Length 

Price Each 

No of Threads to Inch 





Stic 

Diameter 

Over-all 


Clamp 

Collar 

u, s. 

s A K 

Inches 

In. lies 

Inches 

Dve 

Stand- 

Stand- 





ard 

ard 

H 

X 

iX 

$ 2.75 

$ 0.50 

40 

— 

A 

yi 

1 1 * 

2.75 

.50 

24 

— 

X 

X 

i>. 

3.75 

.60 

20 

28 


X 

IX 

3.75 

.60 

18 

24 

H 


ix 

3.75 

.60 

10 

24 

A 

i 

2 

3.85 

.70 

18 

24 


i 

•> 

4.85 

.70 

10 

24 

A 

i 

2 

4.85 

.70 

14 

20 

■'» 

l X 

■IX 

6.50 

.80 

10 

24 

A 

IX 

2X 

6.50 

.80 

14 

20 

X 

i'. 

2X 

6.50 

.80 

13 

20 

« 

n 

i'. 

ZX 

6.50 

.80 

12 

IS 

S« 

IX 

2X 

6.50 

.80 

11 

IS 


Clamp Collars are sent only when order so specifics. 

(Continued on next £</£«•) 





97 


High-Speed Steel Spring Screw Threading Dies 


Fractional Sires 


Price Each N'o. ot ThreatIs to ln> ti 


Cutting 

Size 

lnthef 

Outside 

Diameter 

Indies 

lentil. 

• ►vet all 

Inches 

Dir 

Clani|> 

( iili.ir 

IT. S. 

Stand¬ 

ard 

S. A. E. 

Stand¬ 

ard 


Ps 

2H 

$8.00 

$1.00 

13 

20 

A 

IH 

2H 

8.00 

1.00 

12 

IS 

H 

1 J » 

2'2 

8.00 

1.00 

11 

IS 

H 

Pa 

2« 

8.00 

1.00 

11 

16 

V* 

Pa 

2 X 

S (Ml 

1.00 

10 

16 

H 

P» 

2H 

9.75 

1.00 

11 

IS 

h 

1H 

2i, 

9.75 

1.(0 

10 

16 


P* 

2M 

9.75 

1.00 

0 

14, IS 


Clamp Collars arc sent only when onJcr so specifte*. 


• Concluded l 



High-Speed Adjustable Round Split Dies 


With Adjusting Screw 


Without Adjusting Screw 



List prices on opposite page apply only to the following standards 
and pitches: 

United States Standard 'Standard Pitches Only.) 

S. A. E. Standard. 

A. S. M. E. Standard up to and including No. 14 'all listed 

pitches) ami outside diameters as per list on page 4S. 

All other round split die* are special and subject to s|iecial prices. 
Die* without adjusting screws will be furnished unless otherwise 
specified. 




99 


High-Speed 


Adjustable Round Split Dies 


SIZES AND PRICES 


Diameter 
ol Cut 
Inches 

OUTSIDE DIAME 1 1 R 

PRU 8 B V H 


S' 

II* I* 


•>» 

2* 5*' 

a* 

1 &. undvr 

Sl.an 

$1.20 $1.75 

S.4,50 

$5.50 

SO.00 


ft' 

1.20 

1.20 1.75 

.4.50 

5.50 

9.00 


v 


1.40 1.75 

.4.50 

5.50 

0.00 


ft* 


1.75 

.4.50 

5.50 

o oo 


V 


2 .on 

.4.50 

5.50 

o.oo 

SI 6.00 

Is' 



.4.50 

5.50 

o.OO 

16.00 

V 



4.00 

5.50 

0.00 

16.00 

V 




5.50 

0.00 

i6.no 

1 ' 




b.on 

9.00 

16 00 

I H" 




6.50 

10 00 

16.00 

l’/ 





11.00 

16.00 

1 is' 





12.00 

16.00 

IV 






16.00 

IV 






17.50 

Ur' 






19.00 


See opposite page (or Standards and Threads these prices 
apply to. 


Read page No. 105. 




High-Speed Steel Dies 

One of the Best Propositions in the Small Tool Line 




Thread cutting dies are ideal tools to be made of high speed steel. 
A comparatively small amount of steel is used, so the cost is not in¬ 
creased as much over carbon steel as in some other kinds of tools. 
The heavy cut which they must take on each thread in the tapered 
part, which is not often over three threads long, is the class of work 
for which this steel is particularly adapted. 

For use in Automatic Machines, the long life of our high-speed 
dies makes them especially desirable, since stoppages to replace, sharpen, 
or re-adjust, arc much reduced. We have records showing gains in 
production running from five to fifteen times the am >unts that were 
previously obtained with good carbon steel diet. 

All orders will be filled with LI. S. S. threads unless oi herwisc sjiceified- 

All Left-Hand Dies arc special. 

L T nlcss otherwise specified. High-Speed Round Dies will be furnished 
in the style shown in the above cut, to be adjusted by screws in the die 
holder, but dies with our regular screw adjustment will be furnished, 
if so ordered. 

Special dies of all kinds made to order. 

When special Hobs must be made, a charge will be made for these, 
and they will be retained in our possession. 

Read page I05. 




Index to Tables of Information 



l\. K C 


Dies (information useful in ordering) . . .. lOTi 

Decimal equivalents of millimeters 113 |QJ 

Decimal equivalents Mai liine and Wood Screw Gauge 121 

Decimal equivalents numbered anti letter size Twist Drills 120 

Decimal equivalents numbered Stubs' Steel Wire Gauge 123 

Dimensions of Shanks ami Squares of Hand Taps in decimals 114 Uii 
Formula for United States Standard Threads 106 

Formula for V Form threads .. . 107 

Formula for Whitworth Standard Threads 10S 

Formula for Acme Standard Thread* . 10S 

Formula for French and International Standard Threads 109 

Formula for A. S. M. E. Standard for Machine Screws 110-111 

Form of cutting edges to get maximum results 104 

Lead of Taps and Dies...... 103 

Lubrication . 104 

Size of Taps (Tolcr.inceJ . 102 

Speed of operation of Taps ant) Die* 104 

Tap drill sizes (useful information) . 103 

Tap drill »izes (Tables): 

A. S. M. E. Standard 116 

V. Form 118 

U. S. Standard . 117-1 IS 

Briggs’ Standard for pipe 119 

Table of constants for determining pitch and root diameters 112 

Wire gauge Standards in use in the United States 122 

Wrought Iron Welded Tubes, Briggs’ Standard, (dimensions) 119 




Size of Taps 


102 



The best way to make threaded work interchangeable is to use 
standard size plug thread gauges for testing all tapped holes. The 
thread gauge should represent the maximum screw size, so it is evident 
that taps must be a little over standard size, to allow for an easy fit, 
and a little for wear. 

There is quite a difference in opinion as to what constitutes a good 
fit. Our regular practice on Hand Taps for U. S. S. Screws is as follows: 

All sizes up to diameter inclusive, have pitch diameter-' .0005 
to .1)025 over standard; to diameter inclusive, .0005 lo .003 
over standard; * 4 * to 1' diameter .0005 to .0005 over standard; 1 i" 
to lh' diameter .0005 to .004 over standard; l$tf* to 2* diameter 1 111 1 
to .005 over standard; 2{ w to 2' 2 " diameter .001 to .0055 over standard; 
2$®*’ to 3 r diameter .001 to .000 over standard. 

The tolerance on taps of S. A. E. standard is about .0005 less than 
the alxivc figures and on all sizes the outside diameter about 50% 
more over standard size than the pitch diameter. Tapper taps for nuts 
are generally demanded a little larger than the above. Our V Thread 
Taps are also made over the standard diameters. 

Remember that the outside diameter of a tap has nothing to do with 
the fit, as long as it is large enough. An increase over standard diame¬ 
ter simply gives clearance above the screw threads, which is desirable, 
and at the same time allows for the wear of the taps, which is much 
greater on top of the thread than on the angular sides. Bear these 
facts in mind when ordering special taps, especially those of decimal 
dimensions, and those having V threads (seepage 107), because if you 
give the outside diameter only, we are liable to make a poor guess at 
what you actually need. 

The pitch diameter is the vital dimension. All users and makers of 
threaded work should be supplied with thread calipers. (See page 124.) 



Lead 

The "lead"—a term which, when applied to tap or screw threads, 
means the distance advanced in one complete revolution- has much to 
do with the fit. When the threads are of considerable length the effect 
of incorrect lead is serious, often causing more trouble than variations 
in the pitch diameter, while it also happens that it is much more diffi¬ 
cult to keep either taps or screws to close limits in lead than in pitch 
diameter 

In taps, variation in hardening changes is the chief cause of lead 
troubles. Manufacturers of high-grade taps use great care in making 
allowances for changes in length, as different brands of steel var\ 
greatly, and different sizes do not change the same amounts. Fine 
threads do not change the same as coarse threads of the same diameter 
Variations in the number and form of the flutes also affect the results. 

It requires great care, and very uniform steel, to keep the lead ol 
taps within OtKl" variation from standard in one inch long, but com¬ 
mercial screws often vary as much as .010" in one inch 

With dies the chances for lead troubles arc greater than with taps, 
as we have the hardening of both hobs and dies to contend with, and 
in use the lead cut by dies i» varied by conditions. Holders that do 
not run true, extreme changes in adjustment, undue pressure advancing 
or retarding the lead, etc., often cause trouble for which the die manu¬ 
facturer is not responsible. 

Tap Drill Sizes 

Except where it is desirable to have all the bearing surface possible 
for screws that are to be frequently moved, it is poor policy to tap more 
than 75% of the full thread depth, as the thread of this depth is stronger 
than the bolt, and the power required to operate taps increases very 
rapidly as the full thread depth is approached, and the breakage of 
small taps is greatly increased. 

It is often the best practice to use considerably less than 75% of the 
full thread depth. 

For tap drill tables, sec pages lib to 11S. 



10 .* 



Speed of Operation 

It is not often possible for us to give customers definite figures for 
the speed at which they should operate taps and dies, because there 
are too many conditions over which we have no control. The material 
104 operated on. the machines used, the quantity and quality of the lubrica¬ 

tion supplied, all have an important influence on the results. When 
comparing the speed of taps or dies with other metal cutting tools, bear 
in mind that they are operated with a positive feed equal to their lead, 
which is much faster than the feed of most other tools; therefore their 
speed must usually average lower, unless the work is distributed over 
a long taper, so that the chip taken by each thread is light. Coarse 
thread taps or dies not only cut out more stock than fine threads, but, 
if operated at the same speed, must do the extra work in shorter time, 
so the diameter alone must not be used as an index for the speed. 

Lubrication 

Taps and dies should always be well lubricated. This grows more 
important as the speed increases. There arc numerous cheap cutting 
mixtures and oils on the market that may answer well enough for some 
classes of work, where cooling is often more important than lubrication ; 
hut for taps and dies, especially if threading steel, we recommend 
cotton-seed, lard or sperm oils only, for good work. Some of our best 
results under the most severe tests have been with cotton-sccd oil, but 
it is inclined to “gum" up the machines. 

Form of Cutting Edges 

This is another important item when seeking maximum results. It 
is evident that we must make our stock work so that it will average 
well (or the materials most commonly used. By far the greatest num¬ 
ber of dies are used on steel, so they arc regularly made with a "hooking 
cut." Taps arc used in almost every class of material, so we regularly 
make them with cutting edges nearly radial, but hooking slightly. 
We can often help our customers very much on this question if wc know 
all the conditions. We carry three styles of machine screw taps in stock. 
Sec pages 4 and 14. 




We have gained a very broad experience with thread cutting dies 
by our direct contact with a large number of the best known producers 
of automatic screw machine work. 

Unless otherwise ordered, all of our carbon steel round dies, larger 
than J" outside diameter, are split through one side and adjusted by 
means of an easily operated screw; but we can furnish solid round dies, 
or split dies slotted for the points of three set screws, so that they can 
be adjusted in the die holder. 

When work must be threaded close up to a shoulder, specify this 
fact on your order. 

If dies are to he used exclusively on brass, we should be so informed. 

We are prepared to furnish relieved dies in sizes larger than J'' at 
a small extra cost. They are sometimes desirabte for brass work, and 
for cutting tapering threads for pipe fittings. 

When threads of more than ordinary' accuracy in the lead arc re¬ 
quired, we can supply dies with their lead corrected after hardening. 

We list many sizes of round dies in which the cutting size is too large 
in proportion to the outside diameter. If you wish the best results, 
keep within the limits marked in the lists on the following [sages. 

In the case of special dies, when hobs or other tools must be made, 
their cost will be charged to the first order, and the tools will remain 
in our possession. 

We advise the use of the U. S. Standard threads. It is best to 
always specify the form of thread on your order. 



United States Standard Thread 


106 




l 

P - pitch -- 

No. threads per inch 
D-depth -P X .04952 
P 

F = flat =- 

S 


Unlike the sharp V thread, the U. S. S. form can readily be cut to 
the figures resulting from the use ol the formula. 

Taps are not generally made exactly standard size, but slightly 
larger, so that standard plug thread gauges will easily screw into the 
tapped holes, and also to allow a little for wear. (See page 102). 


Standard Pitches 


Diameter 

\ 

A 

1 

t 

1TB 

I 

a 

ft 

1 

« 

No. Threads 

20 

18 

16 

14 

13 

12 

U 

Diameter 

1 

I 

1 

it 

n 

u 

U 

No. Threads 

10 

0 

8 

7 

7 

0 

6 

Diameter 

K 

U 

i; 

2 

21 

oi 

“4 

2} 

No. Threads 

M 

5 

5 

4} 

41 

41 

4 

Diameter 

2} 

os 

- . 

41 

«»* 

22 

3 

31 

31 

No. Threads 

4 

4 

4 

3} 

3} 

31 

3} 

Diameter 

31 

31 

31 

3} 

35 

4 


No. Threads 

3! 

3} 

3} 

3 

3 

3 



While there is no United States Standard for }}", {-J" and Jfc" 
diameters, you will find these sires regularly listed with 11, 10 and 9 
threads per inch respectively, throughout our catalogue. The U. S. S. 
thread will always be furnished, unless orders specify otherwise. 




V Standard Thread 




Formula 


| P - pitch --- 

No, threads |>er inrh 
{ D=depth=»P X 86003 


Du nut be deceived by the above formula. It is nut possible to 
form, by ordinary means, 60 degree threads of the theoretical depth. 
If a thread is cut to theoretical pitch diameter the outside diameter 
will be reduced about 002" under standard, and will be so sharp as to 
be impracticable. On this account our standard V thread taps and 
dies arc all made with their angular measurement, or pitch diameter, 
considerably larger than the theoretical sue. All other tap makers 
follow the same principle, but no two make the same allowance on all 
sizes. Therefore: THERE IS NO RECOGNIZED STANDARD 
FOR V THREAD TAPS 


Standard Pitches 


Diameter 

1 1 

\ 

A 

i 

A 

\ 

♦ 

n 

I 

H 

No. Threads 

20 

18 

16 

14 

12 

12 

11 

II 

Diameter 

1 

tt 

i 

H 

, 

u 

11 

11 

No. Threads 

10 

10 

9 

0 

8 

7 

7 

6 

Diameter 

11 

H 

1 } 

If 

o 

21 

01 

21 

No. Threads 

0 

5 

5 

4 

4} 

4f 


41 

Diameter 

2 } 

2 i 

2 j 

2 i 

3 

31 

3 t 

31 

No. Threads 

4 

4 

4 

4 

3} 

3J 

3$ 

31 

Diameter 

31 

31 

31 

31 

4 




No, Threads 

a! 

31 

1 

3 

3 

3 





We recommend the un** of the U. S. S. form of thrceoi i ii Md will 
furnish it on all orders unless otherwise instructed. Wc have already 
eliminated from our lists many V thread sixes formerly furnished, and 
expect in time to leave them out entirely. 


107 




Whitworth Standard Thread 



108 



No. threads per inch 
D-depth-P X .64033 
R-radius-P X .1373 


No. 

Diameter Threads 
per inch 

Diameter 

1 NO. 

Threads 
per inch 

Diameter 

No. 

Threads 
per inch 

Dla Dieter. 

No. 

Thread* 
per inch 

l 20 

1 

9 

2 

41 

31 

31 

A 18 

« 

9 

21 

41 

31 

31 

1 J6 

i 

8 

21 

4 

3 

31 

A 14 

i» 

7 

21 

4 

31 

31 

1 12 

il 

7 

21 

4 

31 

3 

A 1 >2 

i| 

0 

21 

4 

31 

3 

I 1 U 

U 

6 

2} 

31 

4 

3 

H ii 

ii 

5 

2f 

34 



! io 

13 

5 

3 

34 



H io 

11 

41 

31 

31 




Acme Standard Screw Thread 


m /1?\ F<,rmu,a 


i 


»v«xxvi 


1 

P—pitch =- 

No. threads per inch 

1 

D-depth- — P+ 010" 
o 

F = flat on top of thread - P X 3707 


It is"the general practice to make the outside diameter of taps about 
020 " over the standard diameter of the screw, to cut a clearance above 
the screw threads. 





International and French Standard Thread 

(Metric System) 



International Standard 


Diameter 

Millimeter* 

Fuch 

Millimeter* 

Diameter 

Millimeters 

Pitch 

Millimeters 

Diameter 

Millimeter? 

Pitch 

Millimeters 

6 

10 

20 

2.5 

48 

5.0 

7 

1.0 

22 

2.5 

52 

5.0 

S 

1.25 

24 

3 0 

56 

5.5 

9 

1 25 

27 

3 0 

60 

5 5 

10 

1.5 

30 

3 5 

64 

6 0 

11 

15 

33 

3 5 

68 

6 0 

12 

1 75 

36 

4 0 

72 

6 5 

14 

2 0 

39 

4.0 

76 

6 5 

16 

2 0 

42 

4.5 

SO 

7 0 

18 

2 5 

45 

4 5 




French Standard 


Diameter 

Ml IUmOui 

Pitch 

Millimeters 

Diameter 

Millimeters 

Pitch 

Millimeters 

Diameter 

Millimeters 

Pitch 

Millimeters 

3 

0.5 

16 

2.0 

36 

4 0 

4 

0.75 

18 

2 5 

38 

4 0 

5 

0.75 

20 

2 5 

40 

4.0 

6 

1.0 

22 

2 5 

42 

4 5 

7 

1 0 

24 

3 0 

44 

4.5 

8 

1.0 

26 

3.0 

46 

4.5 

9 

1.0 

28 

3 0 

48 

50 

10 

15 

30 

3 5 

50 

5.0 

12 

1.5 

32 

3.5 



14 

2 0 

34 

3.5 





110 


American Society of Mechanical Engineers’ Standard 
A. S. M. E. Standard for Machine Screws 

United States Standard Fcrm of Thread 



Formula 


1 

No. threads per inch 
D “ depth =P 64952 

P 

F = flat =- 

8 


Standard Screws 


Note.—Maximum sire* given are the standard sires. 


Dane Size 

Outside Diameter 

Pitch Dm me (ft 

Root Dianutci 

No. 

Out. Di.tm. and 
Threads per In 

Min. 

Max. 

Min. 

Max. 

Min. 

Max. 

0 

060-80 

.0572 

0600 

0505 

0510 

0410 

0138 

l 

073-72 

070(1 

0730 

0825 

(1040 

IK20 

0550 

2 

.000(14 

GS28 

0660 

(1742 

0750 

l)l 124 

.0657 

it 

.009-50 

onr.r, 

0900 

. 0857 

0874 

0721 

(1758 

4 

112-4S 

1082 

1120 

.0906 

0085 

(18(6, 

.08(9 

5 

12.V44 

1210 

1250 

. 1082 

me 

.0010 

0955 

i\ 

. 138-40 

. 1338 

. 13SO 

1197 

1218 

.1007 

1055 

7 

.1.51-36 

1400 

1510 

. 1308 

1330 

1097 

1140 

8 

104-36 

1500 

1040 

. 1438 

1400 

. 1227 

1270 

0 

177-32 

1723 

1770 

1544 

1.507 

1307 

1304 

10 

190-30 

1852 

1000 

1660 

1084 

1407 

1407 

12 

210-28 

2111 

2100 

1003 

1928 

1033 

1000 

14 

242-24 

2368 

2420 

2123 

2140 

1807 

1870 

10 

.268-22 

2020 

2080 

23.58 

2385 

2013 

2000 

IN 

204 20 

28.84 

•21)40 

2.587 

.2615 

2208 

2200 

JO 

320 20 

3144 

.3200 

2847 

•2875 

2408 

2.550 

•►> 

340-18 

3402 

.3460 

3070 

.3000 

2040 

2738 

24 

372-10 

3660 

3720 

3284 

3314 

2810 

.2908 

26 

308-10 

3920 

.3980 

3544 

3574 

3070 

3168 

28 

424-14 

4178 

.4240 

3745 

3770 

3204 

3312 

30 

430-14 

.4438 

.4500 

4005 

,4030 

.3404 

. 3572 


(Continued on next page.) 







A. S. M. E. Standard 

(Concluded) 


Special Screws 

Note Maximum sizes given are the standard sizes. 



Bask Sire 

Outside Diameters 

Pitch Diameters 

knot OlAIIM'ICM 

No. 

Out. Diain. and 

Mini¬ 

Maxi¬ 

Mini* 

Maxi¬ 

Mini* 

Maxi¬ 


Thread* per tn. 

mum 

mum 

mum 

mum 

mum 

mum 

1 

073 tH 

Oitts 

0730 

(N'.l 2 

0629 

041*4 

.0527 

2 

.086-56 

0S2. r > 

nsiio 

0727 

0744 

0591 

. OI42S 

3 

.099—IS 

0963 

0990 

0836 

0855 

0078 

.0719 

4 

112-10 

1078 

1120 

0937 

095S 

0747 

(1795 


112-38 

1076 

1120 

.0918 

0940 

0707 

0759 

5 

125 40 

120S 

1250 

1067 

1<N8 

0877 

0925 


125-38 

1206 

1250 

1048 

1070 

IIS37 

0889 

6 

138-38 

1336 

1381) 

117.8 

1200 

0967 

1019 


138-32 

1833 

1380 

1154 

1177 

0917 

0974 

7 

151-32 

1463 

1510 

1284 

1307 

1047 

1104 


151-30 

1462 

1510 

.1269 

1294 

1017 

1077 

8 

1154-32 

1503 

11540 

1414 

1437 

1177 

1234 


.164-30 

.1592 

nno 

1399 

1423 

1147 

1207 

9 

-177-30 

1722 

1770 

. 1529 

1563 

1277 

1337 


177-24 

171S 

.1770 

1473 

1499 

1158 

1229 

in 

190-32 

. 1853 

.1900 

1674 

1697 

1437 

1494 


190-24 

1848 

.1900 

1603 

1629 

1287 

1359 

12 

21(5-24 

.2108 

2160 

1863 

1889 

1547 

1619 

14 

.242-20 

2364 

2420 

2067 

2096 

1688 

1770 

lti 

288-20 

2624 

.2680 

2327 

2355 

1948 

2030 

IS 

294-18 

.2882 

.2940 

2550 

2579 

2129 

22 IS 

30 

320 IS 

3142 

.3200 

2S10 

2839 

2389 

. 247.8 

22 

.346-16 

.3400 

.3460 

3024 

3054 

2550 

. 2648 

24 

372-18 

3062 

3720 

3330 

3359 

2909 

2998 

2*5 

398-14 

3918 

3980 

3485 

3516 

2944 

3052 

28 

424-16 

4180 

4240 

3804 

3834 

3330 

3128 

30 

450 16 

.4440 

4500 

4064 

4094 

3590 

3688 


The above standard for Machine Screws was adopted b\ the Anx ri 
can Society of Mechanical Engineers at the Indianapolis meeting, 
May 2S-31, 1907. 

For full and complete details concerning this standard and the 
Engineers' recommendations, see their report. Volume 28. No. 9 





Constants for Finding Pitch Diameter and 
Root Diameter of Screw Threads 


To find the pitch diameter or root diameter of any screw thread, subtract 
the Constant for the number of thread* per inch from the outside diameter. 


Threads 

Constants for Finding 

Pitch Diameter 

Conauntafor Finding 

Root Diameter 

per 

loch 

U.S.S. 

Thread 

Whit. 

Thread 

Thewreti- 
eal V « 

! - - 

Thread 

Whit. 

Thread 

Theoreti¬ 
cal V* 

72 

0000 

. 0069 

0120 

01804 

01786 

02406 

64 

0101 

0100 

0135 

02030 

.02001 

02706 

60 

OIOS 

0107 

0144 

02165 

02134 

02887 

56 

0116 

0114 

0155 

02320 

02286 

03093 

50 

0130 

0128 

0173 

02568 

08568 

03464 

4S 

0135 

0133 

oi so 

02706 

.02668 

o:(>« is 

44 

0148 

0146 

0107 

029 

02910 

.03936 

40 

0162 

0160 

0217 

03248 

03202 

04330 

30 

01 SO 

0178 

0241 

03608 

03558 

04811 

32 

.0003 

0800 

0271 

04059 

04002 

05413 

30 

0217 

0213 

0289 

04330 

04268 

05773 

28 

0232 

0223 

0309 

04639 

04574 

01 .1st, 

27 

0241 

0237 

0321 

04812 

04742 

06416 

20 

0250 

0246 

0333 

04996 

.04926 

.06662 

24 

0871 

0267 

0301 

.05413 

.05.(36 

07217 

22 

0806 

0231 

0394 

05905 

06821 

07873 

20 

0325 

0320 

<1433 

06495 

06403 

.08660 

18 

0361 

0355 

04S1 

07217 

07114 

09683 

10 

0406 

0400 

0541 

08119 

08004 

10825 

14 

.0404 

0457 

.001!) 

.09279 

09147 

. 12872 

13 

0439 

0433 

. 6666 

09993 

nos.'i 1 

. 13323 

12 

0541 

.0533 

.0722 

10825 

10672 

.14434 

11 >4 

0565 

0557 

.0753 

.11296 

11132 

.15062 

11 

0590 

0582 

0787 

.11809 

11642 

.15746 

10 

0649 

0640 

0866 

12990 

12806 

17321 

9 

0721 

0711 

0962 

14434 

14230 

19245 

8 

0812 

0800 

1082 

16238 

16008 

21651 

7 

11 1 12S 

0314 

1237 

18558 

18295 

24744 

0 

1082 

. 1066 

1443 

21651 

21344 

.28868 

5X 

.1180 

1164 

1575 

.23619 

23284 

31492 

5 

. 1293 

1280 

1732 

.25981 

25613 

34641 

4Ji 

1443 

1422 

1924 

.28868 

2845S 

38490 

4 

1634 

1601 

2165 

32476 

32017 

43301 

3>i 

.1855 

1830 

2474 

.37115 

36590 

494S7 

3 K 

.1998 

1970 

2665 

.39970 

39404 

53294 

3 

2166 

21.(4 

2NS7 

.43301 

42689 

67733 


‘The figures for V thread are theoretical figures only ami cannot be 
worked to in actual practice. 






Decimal Equivalents of Millimeters and 
Fractions of Millimeters 

mm. = .0003937" 


mm. Inches 

mm. Inches 

A “ 00079 

ffl- .02092 

t «„-.00157 

85- 00071 

A =.00230 

23 - 03150 

A = 00315 

2,',= 03228 

A- 00301 

A-00472 

A = 00651 

2*= 00307 
22= 083.86 
>•- 08465 

A= 00030 

22- 03.543 

A- 00700 

*2= 03622 

U- 00787 
H- oosott 

j{ = 00045 

21= 03701 

22= 03780 

23 - 03.858 

!!= 01024 

1 - 03937 

ii= 01102 

2 = 07S74 

H- omi 

IS- 01200 

3 = 11.S11 

4 = 15748 

IS- 01330 

5 - 19685 

is=01417 

6 - '23622 

4X = 01496 

7 - .27550 

H- 01575 
81-01654 

8 = 31496 

9 = 35433 

81 =01732 

10 - 39370 

81=01811 

11 - 43307 

|J- 01890 

12 - .47244 

13 = .51181 

||-. 0106® 

14 = 55118 

li—.02047 

15 - 59055 

H-.02126 

16 - 62092 

81= 02205 

17 - 66929 

81= 02-283 

IS = .70866 

H- 02362 

19 = .74803 

fi- 02441 

20 = 78740 

K-.02520 

21 - 8-2677 

81=02598 

22 - 86614 

2*=02077 

23 - 90551 

IS-. 02756 

24 - .94488 

25 - 02835 

25 - .98425 

25 — 02913 

36 -1.02362 


min. Inches 

mm. Inches 

27 — 1 06209 

28- 1 10236 

29- 1.14173 

64 = 2 5196.8 

65 = 2 55905 
66=2 59842 

30 = 1 18110 

31 = 1 22047 

32 = 1 2.59s 1 

33- 1 '29921 

34- 1 3385.8 

67 =2 03779 
68=2 67716 
69=2 71653 
70 = 2 75590 
71=2 79527 

35-1 37795 
:itl=l 41732 

37 = 1 4.5600 

38 = 1 49606 

39 = 1 53543 

72 - 2 83464 

73 - 2.87401 

74 —2 91338 

75 = 2 9527.5 

76 =2 99212 

40- 1 57480 

41- 1 81417 

42 = 1.65354 

43 = 1 69291 
44-1 73228 

77 = 3 03149 

78 - 3 07086 
79-3 11023 
80 = 3 14960 
81=3 18897 

45- 1 77165 

46— 1.81108 

47 = 1.8.5039 
48=1.88976 

49 = 1 92913 

82 =3 22834 
83-3 '26771 

84 -3 30708 

85 = 3 34645 
80=3 38582 

50- 1.96850 

51- 2 00787 

52 = 2 04724 
53-8.06661 
54=2 12598 

87-3 42519 
88 -3 46456 

89- 3 50393 

90- 3 54330 
91=3.58367 

55 -2 16535 

56 - 2 20472 

57- 2 24409 

58- 2 28346 

59 =2 32283 

92 = 3 62204 

93 -3.66141 

94 = 3 70078 

95 = 3 74015 

96 =3-77952 

60 -2 36220 

61- 2 40157 

62- 2.44094 

03 - 2 48031 

97=3 81889 
98=3 85826 
99 - 3 89763 
100 - 3 93700 


Centimeter—0.3937 inches 10. dm. = 1 Meter- 39.37 inches 
10cm. =1 Decimeter -3.037 inches 25.4mm. = 1 English inch 



Tolerances for Hand Taps 


Length over-all, ' to 1 // incl. 
Length over-all, to 4' incl. 
Length of thread 
Diameter of shank to 1' incl. 
Diameter of shank 1 ft* to 2* incl. 
Diameter of shank over 2' 

Size of square, and smaller 

Size of square, to V incl. 

Size of square, 1 jV to 2* incl. 

Size of square, 2j*j' to 4' incl. 


plus or minus J-/ 
plus or minus fa 0 
plus or minus 4 " 4 * 
size to size minus 
size to size minus .007*' 
size to size minus .009' 
size to size minus .004* 
size to size minus .006' 
size to size minus .008' 
size to size minus .010' 


See page No. 115. 

Lor tolerance on Pitch and outside diameter of all forms of taps, 
a separate pamphlet will be mailed on request. 



Dimensions of Shanks and Squares 


on Standard Hand Taps 


Diant. 
of 
Tap 
liu: tie* 

Lenuili (mlie* 

Dtatu. 
of 

Site 

of 

Diain. 

of 

l-Cltajtll. III. lift 

1 I)u»lll 

of 

Sine 

Of 

Thread 

Over-all 

■Nli.nlc 
li*> 1*.-. 

St juure 
Indie* 

T.»|i 

lnctie -1 

Thread 

Over all 

Slunk 

1IV III** 

S<|uarc 

11 

'4 

1 

i 

V' 

. 2SX 

. 1897 

1'4 

•9 4 

« i , 

5'4 

1 0215 

7'iOI 

r .« 

24 

. 2ft$(i 

.2015 

IA 

>,, 

- 1 * 

5'. 

1 0527 

7895 

A 

•1 1 , 

. 2843 

.2132 

1A 

•J - 

- It 

3 

5*4 

1 .0840 

$130 


i 

2 1 ■ 

. 2999 

.2240 

1H 

6 A 

1 10S3 

$312 

rt 

u* 

>): ,i 

.31 55 

2366 

ljj 

3 

6 A 

1 1395 

8546 

(1 

i > 

05 i 
•if 

.3311 

2483 

1A 

3 

6A 

1 170S 

s7s 1 

H 

i 1 

•VU 

146$ 

2601 

i'.- 

3 

U 1 , 

l _• 

.9250 

> I 

4 4 

i * 

i 

.3624 

271s 

1H 

3 

0'» 

1 2645 

.'.MSI 

H 

i4 

•> i» 

- 14. 

37 V, 

. 2N39 

1*6 

3A 

o;i 

1.3060 

.9787 

If 

1>4 

2! 1 

3941 

. 2950 

153 

3 A 


i 1362 

1.0021 

1 4 

2M 

. 409S 

.3074 

i 

3 A 


1 4300 

1 0725 

*6 





i 

3 A 

? 

1.4612 

1 0969 

14 

2|i 

.2750 

.2062 

Pi 

3 A 

7 A 

1.5195 

1.1396 

U 

14 

2|< 

2900 

.2170 

li 

3 A 

3 A 

7 A 

1 5507 

1.1630 

!J 

14 

2H 

.3062 

.2296 

O 

7*6 

1 6445 

l 2334 

ii 

14 

•>IS 

- >.* 

.321$ 

2414 

2 A 

3 A 

7h 

$ 

1 0757 

1 250$ 

A 

1A 

3 A 

3232 

2424 

' 

3 A 

1 7694 

1 3271 

ii 

1A 

3A 

33ns 

2541 

-» 1 
- J J 

3 A 

8 

I $007 

1 3505 

H 

> A 

3A 

.3541 

. 265$ 

2«4 

3 A 

S'. 

1 $944 

1 4208 

ii 

• A 

3A 

. 3700 

.2775 

2n 

3 A 

S<4 

1 0257 

1 4443 

4 

m 

3>» 

.3067 

2750 

2H 

4 

S', 

2.0194 

1 5140 

4.1 

111 

3' a 

. 3S23 

2867 

Oil 

•*33 

4 

S4 

2.0507 

1 5380 

11 

Ui 

3'6 

.3970 

.2984 

2 1 - 

4 

*4 

2.1000 

1 5750 

if 

in 

3 J » 

.4135 

.3101 

25? 

4 

8J. 

2.1313 

1 5984 


Hi 

3',] 

3!i 

. 4292 

.3219 

2 H 

4 

s?; 

2.2250 

1.6687 

1 - 

•« 

m 

444s 

3336 

2». 

4 

S?4 

- 1 

1.0922 

■ 

1;! 

311 

. 4601 

3153 

2'< 

4 

9', 

2 3500 

1 7025 

ii 

lii 

314 

. 4760 

.3570 

2s» 

4 

9 4 

2 8811 

1 7- J 

H 

IS 

3 lt 

.4796 

.3597 

27» 

4 

O'. 

2.4750 

l 5562 

4 l 

1 

3|« 

. 4952 

3714 

. 

4 

0'i 

2.5063 

1 $797 

H 

3 5 * 

.510$ 

S$31 

3* 

4 A 

o>; 

2.5429 

1 9072 


Mt 

4 A 

.5421 

. 4066 

3 A 

4 A 

ot; 

2.5742 

1 9306 

H 

•H 

4A 

.5733 

4300 

3'* 

4n 

9?. 

2 6079 

2.0009 

X 

2 

4'. 

.5000 

4425 

3 A 

»A 

94 

2 6002 

2.0244 

•J \ 

i • 

2 

4'. 

.6212 

MSB 

3'. 

•A 

10 

2 7929 

2 0946 

Ii 

2 

4'A 

.6525 

Is'll 

3 A 

4 A 

10 

2 8242 

2.1181 

IS 

•> 

4-,:; 

6831 

5128 

3>» 

4 A 

10 

2 NN27 

2 1620 

7 a 

2A 

41i 

6973 

5230 

31! 

• A 

10 

2 91 10 

2.1855 

ns 

2* 

4{| 

72V. 

5404 

3'i 

i|.: 

10', 

3 0077 

2 2557 

H 

2 A 

41 :• 

759$ 

J509R 

3ii 

411 

10', 

3 0390 

2.2792 

h 

2A 

4?t 

7910 

.7932 

31 a 

4 15 

10’, 

3 1327 

2.3495 

i 

24 

5 1 « 

..NIKKI 

(iOOO 

33 '. 

4 IS 

10', 

3 1610 

2.3730 

l A 

’J 1 . 

516 

.8312 


3-'. 

5 A 

10 >4 

3.2167 

2.4125 

IA 

2'i 

5'6 

. 8625 

1 U 1 

350 

5A 

10'.- 

3 2479 

2.4359 

06 

-A 

5 A 

.8965 

9724 

3'» 

5 A 

10'.- 

3,3417 

2.5002 

1A 

2A 

5 A 

9277 

.t>95H 

3;-. 

5A 

10,'.- 

3.3729 

2 5297 

1A 

2A 

5 A 

.9590 

>7192 

4 

5A 

10'. 

3,46<i7 

2.6000 


For tolerances applying to above table, see page No. Ill 







116 


Tap Drills 

For A. S. M. E- Standard Machine Screw Taps 


The sizes given will cut considerably larger than the root of the 
thread, and are larger than published in some similar lists, but for prac¬ 
tical operation, especially for machine tapping, will be found none too 
large. 



of Tap 

No.of Threads ( 

Sire of Drill 

Sire of Tap 

Ko.oi Threads. 

Stxeol Drill 

0 

so 

55 

10 

24 

23 

i 

56 

53 

10 

2s 

21 

i 

04 

53 

10 

30 

20 

i 

72 

52 

10 

32 

20 

2 

56 

49 

12 

24 

16 

2 

64 

48 

12 

28 

14 

3 

48 

45 

12 

32 

12 

3 

50 

44 

14 

20 

9 

4 

32 

44 

14 

24 

6 

4 

30 

43 

10 

18 

2 

4 

40 

42 

10 

20 

2 

4 

48 

41 

16 

22 

T 

5 

30 

39 

18 

18 

c 

5 

40 

38 

IS 

20 

n 

5 

44 

37 

20 

16 

r. 

f. 

32 

34 

20 

IS 

H 

6 

36 

33 

20 

20 

i 

6 

40 

32 




7 

30 

31 




7 

32 

1 




7 

30 

30 




8 

30 

29 




S 

32 

29 




S 

34V 

28 




9 

24 

27 




9 

30 

26 




9 

32 

25 





See table of constants for pitch and root diameters, page 112. 



Tap Drills 



For U. S. Form Threads 

117 


Slxe of 

Tap 

Threads per Inch 

Size oi Drill 

A 

64. 72 

56, 56 

II 

t 4 

fit), 72 

53. 52 

A 

4S, 50 

50, 50 

M 

48 

44 

'A 

32. 40 

43. 41 

fx 

40 

34 

h 

32. 36 

31, 1 

a 

32 

29 

A 

24. 32 

28, 24 

if 

24 

23 

A 

24. 32 

18, 14 

a 

24 

13 

A 

20. 24. 27, 28, 32 

9. 7, 5, 4, 3 

A 

18, 20, 24, 27, 32 

F, H, 1. j 

H 

16, 20, 24. 27 

A.o, n.Q 

A 

K 

14. 20, 24, 27 

12. 13, 20, 24, 27 

h, v.x, a 

H.li. A. (Ml 

A 

12, 18, 27 

tt. A. SI 

>* 

11, 12. 18. 27 

H. H. A II 

H 

11 , 16 

a 7 a •• 

tl t • RI 

y* 

10, 12. 16. 27 

«i. si. a.» 

« 

10 

S3 

H 

9, 12, 14, IS. 27 

J*. 13, tl. H, II 


See table of constants for pitch and root diameters, page U2. 




118 


Tap Drills 

For U. S. Form Threads 

( Continued ) 


Size of Tap 

Threads per Inch 

She of Drill 

H 

9-12 

ti-H 

1" 

8-12-14-27 

!!-!« IS-St 

1 yi 

7-12 

IMA 

IK 

7-12 

*A-iA 

iK 

6-12 

Ul-I* 

IK 

6-12 

US-i 53 

IX 

5K 

Mi 

1». 

5 

MS 

Vi 

5 

111 

o" 

4K 

m 

a h 

4K 

ui 

a k 

4K 

u? 

2K 

4 

2* 

2K 1 

1 4 

2A 


For V Form Thread* 


Sue of Tap 

Sr»e of Drill 

SUc of Tap 

Size of Dnll 

Size of Tap 

Site of Drill 

K-1S 

12 

K-14 

1 ; 

1 . 


11 

(-4-20 

9 

ft-12 

u 

1 8 


K-24 

5 

H-10 

K 

1 ><-7 

H 

A -18 

K 

ij-11 

a 

1 ><-7 

l A 

A -20 

F 

K -12 

H 

l>«-6 

l* 

K -14 

L 

H-n 

4*1. 

1K-# 

Ml 

ii -16 

N 

j 4 -io 

s 8 

IK-5 

M 

Ji-18 

A 

K-12 

a 

1 >4-6 

M4 

A -14 

s 

tt-10 

H 

1 ?Mj 

1A 

K-12 

X 

7i-9 

11 

2 -1! 

1H 

K-13 

Y 






These sixes do not leave a full thread when holes arc tapped, but are 


as near it as is desirable for practical manufacturing. 

See table of constants for pitch and root diameters, page 112. 




Standard Dimensions of Wrought-Iron Welded Tubes 

Briggs' Standard 


Diameter of Tube* Screwed K n .1» 


Nominal 

Inch** 

Actual 

Inside 

Inctie* 

Actual 

Outride 

Indies 

Thickness 
ot Metal 
Inches 

Number ot 
Tli reads 
to lin ii 

Length of 
Perfect 
Thread 
Incites 

h 

0.270 

0.405 

ii 008 

27 

0 19 

l 

0 364 

0 510 

II I KS 

IsS 

0 29 

i 

0.404 

0 675 

0.091 

18 

0 30 


0.623 

0 840 

0 109 

14 

0 39 

i 

i 

0.824 

1 oso 

0 113 

14 

0 40 

l 

1 048 

1 315 

ii l;t1 

Mi 

0 51 

n 

1 380 

1 660 

0 140 

111 

0.54 

i) 

1 610 

1 900 

0 145 

Mi 

0 55 

o 

2 067 

2 375 

0 154 

Mi 

0.58 

21 

2.468 

2 875 

0.204 

6 

0.89 

3 

3.067 

3-500 

ii 217 

8 

0 95 

31 

3.548 

1 0t«) 

0 236 

8 

1.00 

-1 

4 026 

4 500 

it 287 

8 

1 05 

4* 

4 508 

5 000 

0.246 

S 

1 10 

5 

5 045 

5 503 

0.259 

8 

1 16 

6 

6.065 

6 625 

n 280 

8 

1 26 

7 

7 023 

7 625 

ii 301 

8 

1 36 

8 

7 0S2 

8 625 

0 322 

8 

1 40 

*9 

9.000 

9.688 

0 144 

8 

1.57 

10 

10 019 

10 750 

ii 366 

8 

1 68 


Tap Drills for Pipe Taps 


The sires id drills to he used in boring holes to be reamed with pipe 
reamer, and threaded with pipe taps, arc as follows: 


Sire of 

Threads 

She of 1 

Sire t A 

Threads 

Sire at 

Tap 

Per Inch 

Drill 

1 

Per Inch 

Drill 

'A 

27 

51 

IX 

11 yi 

UI 

yi 

is 

I 

' ■ 

n 

\\X 

2,w 

** 

IS 

t* 

It 
- 1 

•iyi 

8 

25 a 

yi 

14 

3 

8 

3'o 

to 

14 

1« 

3 yi 

8 

3» J 

r 

ll‘i 

l/i 

4 

8 

4ii 


m A 

I 1» 





119 




Decimal Equivalents 

of the 


Numbers of Twist Drill and Steel Wire Gauge 


120 


No. 

of No 

in Decimal* 

No. 

Slse i if No. 
in Decimal* 

No. 

Si/., o 4 No¬ 
rn Decimals 

No. 

Sue of No. 
in Decimals 

1 

.2280 

21 

.1590 

41 

0960 

61 

0390 

2 

2210 

22 

1570 

42 

.0035 

62 

.0390 

3 

.2130 

23 

.1540 

43 

.0890 

63 

0370 

4 

2090 

24 

1520 

44 

.0860 

64 

0360 

5 

.2065 

25 

1495 

45 

.0820 

65 

.0350 

6 

20-10 

26 

1470 

46 

.0810 

66 

0330 

7 

•2010 

27 

1440 

47 

.07.85 

67 

0320 

8 

.1990 

28 

1405 

48 

.0760 

6S 

0310 

9 

.1960 

29 

1360 

49 

0730 

69 

.02925 

10 

1935 

30 

1285 

50 

0700 

70 

0280 

11 

1910 

31 

1200 

51 

0670 

71 

.0260 

12 

. 1890 

32 

1160 

52 

0635 

72 

0250 

13 

1850 

33 

1130 

53 

0595 

73 

0240 

14 

. 1S20 

34 

1110 

54 

0550 

74 

0225 

15 

.1800 

35 

1100 

55 

0520 

75 

0210 

16 

.1770 

36 

1065 

56 

0465 

76 

.0200 

17 

1730 

37 

1010 

57 

0430 

77 

.0180 

18 

1695 

38 

1015 

58 

.0420 

78 

.0160 

19 

1660 

39 

0995 

59 

0410 

79 

0145 

20 

1610 

40 

0980 

60 

0400 

80 

.0135 


Letter Sizes 


A 

.234 

H 

266 

O 

.316 

U 

368 

B 

.238 

I 

.272 

P 

323 

V 

377 

C 

.242 

I 

.277 

Q 

.331 

w 

.386 

D 

.246 

K 

.281 

ft 

.339 

X 

.397 

E 

.25 

L 

.29 

S 

348 

Y 

404 

F 

257 

M 

.295 

T 

,358 

Z 

413 

G 

•261 

N 

.302 








Machine and Wood Screw Gauge 


Number of Size of Number Number of Si#»? of Number 

Screw (*jkuice in Decimals Screw Gauge »n Dr.m^l- 




000 

.03152 

00 

04408 

0 

.05784 

1 

07100 

2 

.08410 

3 

09732 

4 

.11018 

5 

12364 

6 

13680 

7 

14996 

8 

10312 

9 

1702S 

10 

.18944 

11 

.20260 

12 

21576 

13 

.22892 

14 

24208 

15 

25524 

ir> 

.26840 

17 

.28150 

18 

20472 

19 

30788 

20 

32104 

21 

33420 

no 

34736 

23 

30052 

24 

37368 


25 

.38684 

26 

.40000 

27 

.41316 

28 

•12632 

29 

43948 

30 

45264 

31 

465SO 

32 

.47896 

33 

49212 

34 

50528 

35 

51844 

36 

53160 

37 

54476 

38 

55792 

39 

.57108 

40 

58424 

41 

59740 

42 

.61056 

43 

.62372 

44 

.63688 

45 

.*>5004 

46 

.66320 

47 

67636 

48 

68952 

49 

70268 

50 

715S4 


The difference between consecutive sizes is .01316 inch. 




122 


Different Standards for Wire Gauge in Use in the United States 
EXmensions of Sizes in Decimal Parts of an Inch 


No, Of 
Wire 

Gauge 

American 
or Brown 
,v Sharp* 

Birm* 

inxliam 

or 

Stubs' 

Wire 

Washburn 
& Moen 
Mfg. Co. 
Worcester 
M.v;« 

Trenton 
Iron Co. 
Trenton. 
N. J. 

Stubs' 

Steel 

Wire 

^ u. s. 

Standard 
for Plate 

No. cA 
Wire 
Gauge 

uooooo 

__ 

_ 


— 

_ 

46875 

oooooo 

00000 

— 

— 

— 

45 

— 

4375 

00000 

0000 

40 

454 

.3933 

4 

— 

40625 

0000 

ono 

.40964 

425 

.3625 

36 

— 

375 

000 

00 

.3648 

38 

.3310 

33 

— 

34375 

00 

0 

.33486 

34 

.3065 

305 

— 

3125 

0 

1 

2893 

3 

.2830 

285 

227 

23125 

1 

2 

25763 

284 

2625 

265 

219 

•265625 

2 

3 

22942 

259 

2437 

245 

*212 

25 

3 

4 

20431 

238 

•2253 

225 

207 

234375 

4 

5 

18194 

■>> 

•2070 

205 

•204 

21875 

5 

6 

16202 

•203 

1920 

19 

•201 

203125 

6 

7 

.14428 

.18 

1770 

175 

199 

.1875 

7 

8 

.12849 

. 105 

1620 

16 

.197 

171875 

8 

9 

11443 

.148 

1483 

145 

KM 

15025 

9 

10 

10189 

.134 

1350 

13 

191 

140625 

10 

11 

090742 

.12 

.1205 

1175 

188 

125 

11 

12 

0S0S0S 

.109 

1055 

. 105 

185 

109375 

12 

13 

071901 

.095 

0915 

0925 

182 

04(375 

13 

14 

.004084 

.033 

0300 

.08 

180 

078125 

14 

15 

.057008 

.072 

.0730 

07 

178 

0703125 

15 

16 

.05082 

065 

.0625 

061 

175 

0625 

16 

17 

045257 

.053 

.0540 

0525 

172 

06625 

17 

18 

.010303 

049 

0175 

045 

168 

05 

18 

19 

.03539 

042 

0410 

01 

161 

04375 

19 

30 

.031961 

035 

034.6 

035 

161 

0375 

20 

21 

028462 

032 

03175 

031 

157 

034375 

21 

22 

025347 

023 

0286 

028 

155 

031'25 

22 

23 

.022571 

025 

0258 

025 

153 

028125 

23 

24 

0201 

022 

0230 

0225 

151 

.025 

24 

25 

0179 

02 

0204 

02 

148 

.021875 

25 

26 

01591 

013 

0181 

018 

146 

.01875 

26 

27 

014195 

016 

0173 

017 

143 

0171875 

27 

28 

012041 

014 

0162 

016 

130 

.015625 

28 

29 

011257 

.013 

.0150 

015 

134 

0140625 

29 

30 

010025 

012 

0140 

014 

127 

0125 

30 

31 

008928 

01 

.0132 

013 

.120 

0109375 

31 

32 

00795 

009 

0128 

012 

.115 

.01015625 

32 

33 

00703 

.008 

0118 

Oil 

112 

.009375 

33 

34 

006304 

007 

0104 

01 

.110 

.00859375 

34 

35 

005014 

.005 

0005 

.0005 

103 

.0078125 

35 

36 

005 

004 

0000 

(109 

. lot. 

.00703125 

36 

37 

.004453 

— 

— 

.0085 

103 

006640625 

37 

38 

.003965 

— 

— 

003 

101 

00625 

38 

39 

.009531 

— 


.0075 

099 

— 

39 

40 

003144 

— 


007 

.097 

— 

40 


See note on next page. 








Fable of Decimal Equivalents of Stubs' Steel Wire Guage 


Letter 

JMZe of 

No. of 

Sice of 

N'o. ol 

- • of 

' No. ol 

Size <il 

Leltn in 

Wire 

Number in 

Wire 

Number in 

Wire 

Number in 


Decimals 

1 *UUUC 

EVcimal* 

<■., ue'' 

Decimal* 

Guuue 

i 

z 

.413 

1 

227 

28 

.139 

55 

060 

Y 

.404 

2 

.219 

29 

134 

56 

.045 

X 

W 

397 

3 

212 

30 

127 

57 

.042 

3so 

A 

207 

31 

120 

56 

oil 

V 

ir 

377 

5 

201 

32 

115 

59 

.040 

308 

0 

.201 

33 

112 

60 

.039 

T 

338 

i 7 

.199 

34 

.110 

61 

<138 

S 

R 

348 

S 

.197 

35 

1118 

62 

037 

339 

9 

194 

30 

1110 

63 

030 

n 

A 

332 

10 

191 

37 

103 

64 

.035 

P 

323 

II 

188 

38 

101 

65 

.033 

o 

310 

12 

.185 

39 

.099 

06 

.032 

N 

302 

13 

182 

40 

097 

67 

.031 

M 

295 

14 

ISO 

41 

.095 

68 

030 

1. 

.200 

15 

. 17S 

42 

.092 

09 

029 

K 

281 

10 

175 

43 

088 

70 

027 

j 

.277 

17 

172 

44 

085 

71 

020 

1 

II 

.272 

18 

108 

45 

081 

72 

024 

.200 

19 

.164 

46 

079 

73 

.023 

G 

281 

20 

.101 

47 

077 

74 

.022 

K 

257 

21 

157 

48 

.075 

75 

02ft 

E 

250 

o*> 

155 

49 

072 

76 

01.8 

L> 

240 

23 

153 

50 

069 

77 

.016 

C 

242 

24 

151 

51 

006 

78 

015 

It 

238 

25 

.148 

52 

063 

79 

.014 

A 

234 

20 

140 

53 

058 

SO 

013 



27 

.143 

54 

055 




Stubs' Gauges 

In using I in- Gauges known as Stubs' Gauges, there should be con¬ 
stantly borne in mind the difference between the Stubs' Iron Wire 
Gauge and the Stubs' Steel Wire Gauge. 

The Stubs' Iron Wire Gauge is the one commonly known as the 
English Standard Wire, or Birmingham Gauge, and designates the 
Stubs’ soft wire sizes. 

The Stubs' Steel Wire Gauge is the one that is used in measuring 
drawn steel wire or drill rods of Stubs' make, and is also used by many 
makers of American drill roils. 






Micrometer Calipers, 
for Measuring Screw Threads 


124 



B»c\: > Mir Cc. 

'fi.L 


The distinctive feature in the construction ofjthis Caliper is that 
the end of the movable spindle is pointed and the fixed end or “anvil" 
is V-shaped. Enough is taken from the end of the point and the bot¬ 
tom of the V is carried down low enough, so that they will not rest on 
the bottom or top of the thread to be measured, but on the cut surface. 
As the thread itself is measured, it will be seen that the actual outside 
diameter of the piece docs not enter into consideration. 

As we measure one-half of the depth of the thread from the top, on 
each side, the diameter of the thread as indicated by the Caliper, or the 
pitch diameter, is the full size of the thread less the depth of one thread. 

When the point and anvil are in contact the 0 represents a line 
drawn through the plane A B, and if the Caliper is opened, say to 500, 
it represents the distance of the two planes 500" apart. 

We recommend the use of this micrometer in measuring screws ami 


taps 




3 1812 04052 6452 


r *'*%m 

41 ** Ww. 


m 





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