Maximum recommended tightening torque
- Metric threads
Standard Series - Course & Fine
All Torque figures in Nm (Newton Metres)
| Nominal Thread Diameter mm |
4:6 Quality | 4:8 Quality | 5:6 Quality | |||
| Course | Fine | Course | Fine | Course | Fine | |
| Nm | Nm | Nm | Nm | Nm | Nm | |
| M3 | 0.57 | 0.76 | 0.71 | |||
| M4 | 1.3 | 1.8 | 1.7 | |||
| M5 | 2.7 | 3.6 | 3.3 | |||
| M6 | 4.5 | 6.0 | 5.7 | |||
| M7 | 7.6 | 10.2 | 9.5 | |||
| M8 | 11.0 | 11.8 | 14.0 | 15.7 | 13.8 | 14.8 |
| M10 | 21.8 | 23.0 | 29.0 | 30.7 | 27.3 | 28.8 |
| M12 | 38.1 | 41.6 | 50.8 | 55.5 | 47.6 | 52.0 |
| Nominal Thread Diameter mm |
5:8 Quality | 6:6 Quality | 8:8 Quality |
|||
| Course | Fine | Course | Fine | Course | Fine | |
| Nm | Nm | Nm | Nm | Nm | Nm | |
| M3 | 0.95 | 0.85 | 1.5 | |||
| M4 | 2.2 | 2.0 | 3.5 | |||
| M5 | 4.5 | 4.0 | 7.1 | |||
| M6 | 7.6 | 6.8 | 12.1 | |||
| M7 | 12.7 | 11.4 | 20.3 | |||
| M8 | 18.4 | 19.7 | 16.5 | 17.7 | 29.4 | 31.5 |
| M10 | 36.4 | 38.4 | 32.8 | 34.6 | 58.3 | 61.0 |
| M12 | 64.0 | 69.0 | 57.0 | 62.0 | 101.0 | 111.0 |
| Nominal Thread Diameter mm |
9.8 Quality | 10:9 Quality | 12:9 Quality | |||
| Course | Fine | Course | Fine | Course | Fine | |
| Nm | Nm | Nm | Nm | Nm | Nm | |
| M3 | 1.7 | 2.1 | 2.6 | |||
| M4 | 4.0 | 5.0 | 6.0 | |||
| M5 | 8.0 | 10.0 | 12.0 | |||
| M6 | 13.6 | 13.0 | 17.0 | 18.0 | 20.4 | 22.0 |
| M7 | 22.8 | 28.6 | 34.3 | |||
| M8 | 33.1 | 35.4 | 41.3 | 44.3 | 49.6 | 53.2 |
| M10 | 66.0 | 69.0 | 82.0 | 86.0 | 98.0 | 104.0 |
| M12 | 114.0 | 125.0 | 143.0 | 156.0 | 171.0 | 187.0 |