bennypass.com - Table 1 / Torque FT-LBS - ASTM A193 and ASTM A320 Grade B8, CL2 Stud Bolts

Table 1 / Torque FT-LBS - ASTM A193 and ASTM A320 Grade B8, CL2 Stud Bolts

BOLT DIA	Torque FT-LBS			Torque Nm (newton meter)
BOLT DIA	Torque 30% Initial	Torque 70%	Torque 100% Final	Torque 30% Initial	Torque 70%	Torque 100% Final
1/2"	16	36	52	22	49	71
9/16"	23	53	75	31	72	102
5/8"	31	73	104	42	99	141
3/4"	55	129	184	75	175	249
7/8"	71	166	237	96	225	321
1"	107	249	356	145	338	483
1 ⅛"	127	297	424	172	403	575
1 ¼"	179	417	596	243	565	808
1 ⅜"	186	435	622	252	590	843
1 ½"	246	574	821	334	778	1113
1 9/16"	168	392	560	228	531	759
1 ⅝"	191	445	636	259	603	862
1 ¾"	240	561	801	325	761	1086
1 ⅞"	298	696	994	404	944	1348
2"	366	853	1219	496	1157	1653
2 ¼"	529	1234	1762	717	1673	2389
2 ½"	733	1709	2442	994	2317	3311
2 ¾"	986	2300	3285	1337	3118	4454
3"	1289	3008	4297	1748	4078	5826

ft-lbs to nm = 0.737562149277
nm to ft-lbs = 1.3558179

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