Craftsman 107.2777 Torque Specification Chart, Wrench & Fastener Size Guide, Nut, 1/2, fltJfit

fltJfit

Common Hardware Types

Torque Specification Chart

Hex Head Capscrew

Carriage Bolt

Washer

Lockwasher

FORSTANDARDMACHINEHARDWARE(Tolerance _+20%)

Hardware	©	O	©
Grade
	SAEGrade2	SAEGrade5	SAEGrade8

O Hex Nut

Standard Hardware Sizing

When a washer or nut is identified as 1/2", this is the Nominal size, meaning the inside diameter is 1/2 inch; if a second number is present it represent the threads per inch

When bolt or capscrew is identified as 1,/2 - 16 x 2", this means the Nominal size, or body diameter is 1/2 inch; the second number represents the threads per inch (16 in this example, and the final number is the body length of the bolt or screw (in this example 2 inches long).

The guides and ruler furnished below are designed to

help you select the appropriate hardware and tools.

m_b

Nut, 1/2"

Inside

Diameter

Screw, 1/2 x 2-- -

=4

Diameter/) /

I B°dYL_ /

m_

SizeOf	in/Ibs		in/Ibs		i n/I hs
Hardware ft/Ihs		Nm.	ft/Ibs	Nm.	ft/Ihs	NITI.
8-32	19	2.1	30	3.4	41	4.6
8-36	20	2.3	31	3.5	43	4.9
10-24	27	3.1	43	4.9	60	6.8
10-32	31	3.5	49	5.5	68	7.7
1/4-20	66	7.6	8	10.9	12	16.3
1/4-28	76	8.6	10	13.6	14	19.0
5/16-18	11	15.0	17	23.1	25	34.0
5/16-24	12	16.3	19	25.8	27	34.0
3/8-16	28	27.2	38	40.8	45	61.2
3/8-24	23	31.3	35	47.6	50	68.0
7/16-14	38	40.8	58	68.0	70	95.2
7/16-20	35	47.6	55	74.8	86	108.8
1/2-13	50	68.0	75	102.0	116	149.6
1/2-20	55	74.8	98	122.4	126	163.2
9/16-12	65	88.4	110	149.6	156	204.0
9/16-18	75	102.0	128	163.2	178	231.2
5/8-11	gO	122.4	158	204.0	220	299.2
5/8-18	166	136	188	244.8	240	326.4
3/4-10	166	217.6	268	353.6	386	525.0
3/4-16	186	244.8	386	408.0	420	571.2
7/8-9	146	190.4	466	544.0	686	816.0
7/8-14	155	210.8	446	598.4	666	897.6
1-8	226	299.2	588	788.8	960	1,244.0
1-12	246	326.4	646	870.4	1,000	1,360.0

NOTES

1.These torque values are to be used for all hardware excluding: Iocknuts, self-tapping screws, thread forming screws, sheet metal screws and socket head setscrews.

2.Recommended seating torque values for Iocknuts:

a.for prevailing torque Iocknuts - use 65% of grade 5 torques.

b.for flange whizlock nuts and screws - use 135% of grade 5 torques.

3.Unless otherwise noted on assembly drawings, all torque values must meet this specification.

Wrench & Fastener Size Guide

1/4" Bolt	or Nut	5/16" Bolt	or Nut	3/8" Bolt	or Nut	7/16"	Bolt or Nut		1/2" Bolt	or Nut
Wrench--	7/16"	Wrench--	I/2"	Wrench--	9/16"	Wrench	(Bolt)	--5/8"	Wrench--	3/4"
						Wrench	(Nut)--	11/16"

PTS - 34