Recommended Assembly Torque Values *
304 (A2-70) /316 (A4-70) Stainless steel
Metric

Imperial
Size
Nm
lb ft
Size
Nm
lb ft
M 3
0.90
0.7
1/4 unc
7.70
5.7
M 4
2
1.5
5/16 unc
16
11.8
M 5
4
3.0
3/8 unc
28
20.7
M 6
7
5
1/2 unc
66
49
M 8
17
13
5/8 unc
131
97
M 10
33
24
3/4 unc
231
171
M 12
57
42
7/8 unc
369
273
M 14
91
67
1 unc
553
409
M 16
140
104

M 20
273
202
M 24
472
349
M 27
682
505
M 30
930
688
M 36
1620
1199
Notes
1. Values given represent the torque required to induce a tension in the bolt corresponding to approximately 65% of its proof load.
* This table is recommended for use as a guide only. While all care has been taken with its preparation, no responsibility is accepted for the absolute accuracy of the data provided.