Simplicity ZT2761F, ZT2561F specifications Hardware Identification & Torque Specifications

Hardware Identification & Torque Specifications

Common Hardware Types

Hex Head Capscrew	Washer
	Lockwasher
Carriage Bolt
	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 represents the threads per inch.

When a 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 (2 inches long in this example).

The guides and ruler furnished below are designed to help you select the appropriate hardware and tools.

0

Nut, 1/2”	1/4
Inside	1/2
Diameter
	3/4
	1
	1/4
Screw, 1/2 x 2	1/2
	3/4
Body	2
Diameter	1/4
Body	1/2
Length
	3/4
	3
	1/4
	1/2
	3/4
	4

Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)

Hardware		No
	Marks
Grade	SAE Grade 2			SAE Grade 5		SAE Grade 8
Size Of	in/lbs			in/lbs		in/lbs
Hardware	ft/lbs		Nm.	ft/lbs	Nm.	ft/lbs	Nm.
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	20		27.2	30	40.8	45	61.2
3/8-24	23		31.3	35	47.6	50	68.0
7/16-14	30		40.8	50	68.0	70	95.2
7/16-20	35		47.6	55	74.8	80	108.8
1/2-13	50		68.0	75	102.0	110	149.6
1/2-20	55		74.8	90	122.4	120	163.2
9/16-12	65		88.4	110	149.6	150	204.0
9/16-18	75		102.0	120	163.2	170	231.2
5/8-11	90		122.4	150	204.0	220	299.2
5/8-18	100		136	180	244.8	240	326.4
3/4-10	160		217.6	260	353.6	386	525.0
3/4-16	180		244.8	300	408.0	420	571.2
7/8-9	140		190.4	400	544.0	600	816.0
7/8-14	155		210.8	440	598.4	660	897.6
1-8	220		299.2	580	788.8	900	1,244.0
1-12	240		326.4	640	870.4	1,000	1,360.0

NOTES

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

2.Recommended seating torque values for locknuts:

a.For prevailing torque locknuts: use 65% of Grade 5 torque.

b.For flange whizlock nuts and screws: use 135% of Grade 5 torque.

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

Wrench & Fastener Size Guide

	5/16	3/8	7/16	1/2
1/4
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—1/2”	Wrench—9/16”	Wrench (Bolt)—5/8”	Wrench—3/4”
			Wrench (Nut)—11/16”