SAE Series Bolt Torque Chart

Diameter	Wrench Size	SAE Grade 2 (no marks on the head)		SAE Grade 5 (3 marks on the head)		SAE Grade 5 (6 marks on the head)
		Lbs.-Ft.	N-m	Lbs.Ft.	N-m	Lbs.-Ft.	N-m
1/4"	7/16"	6	8	10	13	14	18
5/16"	1/2"	12	17	19	26	27	37
3/8"	9/16"	23	31	35	47	49	67
7/16"	5/8"	36	48	55	75	78	106
1/2"	3/4"	55	75	85	115	120	163
9/16"	13/16"	78	10	121	164	171	232
5/8"	15/16"	110	149	170	230	240	325
3/4"	1-1/8"	192	261	297	403	420	569
7/8"	1-5/6"	306	416	474	642	669	907
1"	1-1/2"	467	634	722	979	1020	1383

Metric Series Course Thread Bolt Torque Chart
Dia. & Thread Pitch	Wrench Size	Head of bolt marked 8.8		Head of bolt marked 10.9
		N-m	Lbs.-Ft.	N-m	Lbs.-Ft.
6 x 1.0	10 mm	8	6	11	8
8 x 1.25	13 mm	20	15	27	20
10 x 1.5	16 mm	39	29	54	40
12 x 1.75	18 mm	68	50	94	70
14 x 2.0	21 mm	109	80	151	111
16 x 2.0	24 mm	169	125	234	173
18 x 2.5	27 mm	234	172	323	239
20 x 2.5	30 mm	330	244	457	337
22 x 2.5	34 mm	45	332	623	460
24 x 3.0	36 mm	571	421	790	583
30 x 3.0	46 mm	1175	867	1626	1199

Metric Series Fine Thread Bolt Torque Chart
Dia. & Thread Pitch	Wrench Size	Head of bolt marked 8.8		Head of bolt marked 10.9
		N-m	Lbs.-Ft.	N-m	Lbs.-Ft.
6 x 1.0	10 mm	8	6	11	8
8 x 1.0	13 mm	21	16	29	22
10 x 1.25	16 mm	41	30	57	42
12 x 1.25	18 mm	75	55	103	76
14 x 1.5	21 mm	118	87	163	120
16 x 1.5	24 mm	181	133	250	184
18 x 1.5	27 mm	263	194	363	268
20 x 1.5	30 mm	367	270	507	374
22 x 1.5	34 mm	495	365	684	505
24 x 2.0	36 mm	623	459	861	635
30 x 2.0	46 mm	1258	928	1740	1283