Inch 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 Newton Meters - Nm
	Dry	Lubed	Dry	Lubed	Dry	Lubed
1/4-20	11.4	8.6	16.2	12	19	13.6
1/4-28	13.1	9.8	16.6	13.9	21.7	16.3
5/16-18	23.6	17.7	33.3	25	39.3	29.8
5/16-24	26.1	19.7	36.9	27.7	43.4	32.5
3/8-16	42	31.2	60	45	69	52
3/8-24	47	35	66	50	79	58
7/16-14	66	50	95	71	110	83
7/16-20	75	56	106	79	123	92
1/2-13	102	77	144	108	168	126
1/2-20	115	87	163	122	190	142
5/8-11	203	153	287	216	323	243
5/8-18	230	172	325	244	366	274
3/4-10	362	271	510	382	574	430
3/4-16	403	302	569	427	640	480
7/8-9	582	437	822	617	925	693
7/8-14	643	481	907	681	1020	765
1-8	873	655	1232	923	1879	1040
1-12	979	735	1383	1037	1555	1166
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.