Bolt Torque Table Estimated with clamp load as 75% of proof load as specified in SAE J429 and ASME 574
Steel Grade	SAE 5		SAE 8		Socket Head Cap Screws
Minimum Tensile  Strength PSI	120,000		150,000		1/4-1/2" 180,000   5/8-1" 170,000
Nominal Dia. and Thread Pitch	Bolt Torque Specs in Foot Pounds or (Inch Pounds)
	Dry	Lubed	Dry	Lubed	Dry	Lubed
1/4-20	(101)	(76)	(143)	(107)	(168)	(120)
1/4-28	(116)	(87)	(147)	(123)	(192)	(144)
5/16-18	(209)	(157)	(295)	(221)	(348)	(264)
5/16-24	(231)	(174)	(327)	(245)	(384)	(288)
3/8-16	(372)	(276)	44	33	51	38
3/8-24	(420)	(312)	49	37	58	43
7/16-14	49	37	70	52	81	61
7/16-20	55	41	78	58	91	68
1/2-13	75	57	106	80	124	93
1/2-20	85	64	120	90	140	105
5/8-11	150	113	212	159	238	179
5/8-18	170	127	240	180	270	202
3/4-10	267	200	376	282	423	317
3/4-16	297	223	420	315	472	354
7/8-9	429	322	606	455	682	511
7/8-14	474	355	669	502	752	564
1-8	644	483	909	681	1022	767
1-12	722	542	1020	765	1147	860
Lubed means cleaned dry bolts lubricated with a standard medium viscosity   machine oil. Lubricate all contact areas of the bolts and washers. Lubricating  the bolts is the suggested method.  Thread Engagement

Note: Much effort has been made to make sure that these bolt torque specs are accurate. However, it is the user's responsibility to verify that the provided information is correct before using it.