Torque Values - Inch Fastener Hardware

Torque Values (Dry)							Torque Values (Lubricated)
Size	Grade 21		Grade 5		Grade 8		Size		Grade 21	Grade 5		Grade 8
	N·m	lb-ft	N·m	lb-ft	N·m	lb-ft		N·m	lb-ft	N•m	lb-ft	N•m	lb-ft
1/4	7.4	5.5	12	9	17	12.5	1/4	6.1	4.5	9.5	7	13.6	10
5/16	15	11	24	18	35	26	5/16	12.2	9	20	15	28	21
3/8	27	20	45	33	62	46	3/8	22	16	35	26	49	36
7/16	43	32	70	52	102	75	7/16	35	26	56	41	79	58
1/2	68	50	108	80	156	115	1/2	53	39	85	63	122	90
9/16	95	70	156	115	217	160	9/16	76	56	122	90	176	130
5/8	136	100	217	160	305	225	5/8	106	78	170	125	217	160
3/4	238	175					3/4	190	140
· Use 80% of the value when tightening part is aluminum. · Use 60% of the value for 4T bolts and lock nuts.							· Use 80% of the value when tightening part is aluminum. · Use 60% of the value for 4T bolts and lock nuts.