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STANDARD BOLT TORQUE SPECIFICATIONS
SPECIFIED TORQUE FOR STANDARD BOLTS
Specified torque
Class | Diameter mm | Pitch mm | Hexagon head bolt | | | Hexagon flange bolt | |
| | | kg-cm | ft-lb | N·m | kg-cm | ft-lb | N·m
4T
6 | 1 | 55 | 48 in.-lb | 5.4 | 60 | 52 in.-lb | 5.9
8 | 1.25 | 130 | 9 | 13 | 145 | 10 | 14
10 | 1.25 | 260 | 19 | 25 | 290 | 21 | 28
12 | 1.25 | 480 | 35 | 47 | 540 | 39 | 53
14 | 1.5 | 760 | 55 | 75 | 850 | 61 | 83
16 | 1.5 | 1,150 | 83 | 113 | — | |
5T
6 | 1 | 65 | 56 in.-lb | 6.4 | — | |
8 | 1.25 | 160 | 12 | 16 | — | |
10 | 1.25 | 330 | 24 | 32 | — | |
12 | 1.25 | 600 | 43 | 59 | — | |
14 | 1.5 | 930 | 67 | 91 | — | |
16 | 1.5 | 1,400 | 101 | 137 | — | |
6T
6 | 1 | 80 | 69 in.-lb | 7.8 | 90 | 78 in.-lb | 8.8
8 | 1.25 | 195 | 14 | 19 | 215 | 16 | 21
10 | 1.25 | 400 | 29 | 39 | 440 | 32 | 43
12 | 1.25 | 730 | 53 | 72 | 810 | 59 | 79
14 | 1.5 | — | | | 1,250 | 90 | 123
7T
6 | 1 | 110 | 8 | 11 | 120 | 9 | 12
8 | 1.25 | 260 | 19 | 25 | 290 | 21 | 28
10 | 1.25 | 530 | 38 | 52 | 590 | 43 | 58
12 | 1.25 | 970 | 70 | 95 | 1,050 | 76 | 103
14 | 1.5 | 1,500 | 108 | 147 | 1,700 | 123 | 167
16 | 1.5 | 2,300 | 166 | 226 | — | |