Craftsman C950-52943-0 owner manual Nut, 1/2, Screw, Wrench & Fastener Size Guide

Hardware identification& TorqueSpecifications

Common	Hardware Types
Hex Head Capscrew			Washer
			Lockwasher
Carriage	Bolt
	[(((((((((((((((((((O	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.

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Nut, 1/2"

Inside

Diameter

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m_	Screw,	1/2 x 2 _;-	I
			I
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m_	Diameter(	B°dyL	/
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Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance + 20%)

_raarddeware	G		0		Q
	SAE Grade2		SAEGrade 5		SAEGrade8
Size Of	in/Ibs		in/Ibs
Hardware	ft/I bs	Nm.	ft/Ibs	Nm.	ft/I bs	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	118	149.6
1/2-20	55	74.8	90	122.4	128	163.2
9/16-12	65	88.4	110	149.6	158	204.0
9/16-18	75	102.0	120	163.2	178	231.2
5/8-11	90	122.4	150	204.0	228	299.2
5/8-18	100	136	180	244.8	248	326.4
3/4-10	160	217.6	260	353.6	386	525.0
3/4-16	180	244.8	300	408.0	428	571.2
7/8-9	140	190.4	400	544.0	688	816.0
7/8-14	155	210.8	440	598.4	668	897.6
1-8	220	299.2	580	788.8	968	1,244.0
1-12	240	326.4	640	870.4	1,088	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:

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_ength __@

a.	for prevailing torque	Iocknuts - use 65% of grade 5
	torques.
b.	for flange whizlock	nuts and screws - use 135% of
	grade 5 torques.

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3. Unless otherwise noted on assembly drawings, all torque

values must meet this specification.

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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 - 36