Ordering Special Dies

Special Dies can be manufactured in any quantity from one piece to hundreds. As prices for specials are based on the quantities ordered, please contact our order desk for a quotation of your needs.

When ordering special dies the more information we have will enable us to determine the correct tool for your application. Below is a list of information required to accurately quote:



Diameter
Pitch
Class of Fit
Right or Left Hand
Thread Form
Lead - Single, Double etc.
Solid or Split Adjusting
Material to be threaded
Cutting new threads or rethreading existing thread
Outside diameter & thickness of die
Length of part to be threaded
Special features which might affect the die

*****Submit drawings or prints if possible*****

Please sent completed form to sales@taylortool.com or  FAX to 519-658-6799

PULLEY TAP DIMENSIONS • GROUND THREAD

PULLEY TAP DIMENSIONS • GROUND THREAD

(Ref. MCTI Table 310)

Nominal	Tap Dimensions - Inches
Fractional	Overall	Thread	Neck	Square	Length of Shank	Shank	Size of
Diameter	Length	Length	Length	Length	Close Tol. Section	Diameter	Sqaure
Inches	L	l	l1	l2	l4	d1	a
1/4  (.2500)	6 ,8	1.00	.38	.31	1.50	.2550	.191
5/16  (.3125)	6, 8	1.13	.38	.38	1.56	.3180	.238
3/8  (.3750)	6, 8, 10	1.25	.38	.44	1.63	.3810	.286
7/16  (.4375)	6, 8	1.44	.44	.50	1.69	.4440	.333
1/2  (.5000)	6, 8, 10, 12	1.66	.50	.56	1.69	.5070	.380
5/8  (.6250)	6, 8, 10, 12	1.81	.63	.69	2.00	.6330	.475
3/4  (.7500)	10, 12	2.00	.75	.75	2.25	.7590	.569

Tolerances

Element	Size Range	Direction	Tolerance
Overall Length - L	1/4 to 3/4 inc.	Plus or Minus	.063
Thread Length - l	1/4 to 3/4 inc.	Plus or Minus	.063
Neck Length - l1	1/4 to 3/4 inc.	See Note - 1	See Note - 1
Square Length - l2	1/4 to 3/4 inc.	Plus or Minus	.031
Length of Shank (close tol) - l4	1/4 to 3/4 inc.	See Note - 2	See Note - 2
Shank Diameter - d1	1/4 to 3/4 inc.	Minus	.0050
Square of Shank - a	1/4 to 1/2 inc.	Minus	.004
	5/8 to 3/4 inc.	Minus	.006

Notes

1. L1 (Neck Length); neck and its length is optional with manufacturer
2. L4 (Length of Close Tolerance Shank) is minimum length which is held to eccentricity tolerances per Table 317.

General Notes

a)       These taps have an internal center in the thread end.

b)      These taps are made to the H3 limits shown in Table 327)

c)       For eccentricity tolerances of taps elements see table 317.

d)      d1 (Shank Diameter) is approximately the same as the maximum major diameter for that size.

e)       a1 (Size or Square) is equal to .75 X d1 to the nearest .001 inch.