Shear nuts are a high security permanant fastener.
The hex part of the nut shears off at a predetermined torque leaving a tamper resistant cone.
| Size | Shear Torque lb/ft |
Shear Torque nm |
| M6 | 5 - 9 | 7 - 14 |
| M8 | 10 - 15 | 14 - 20 |
| M10 | 23 - 28 | 31 - 38 |
| M12 | 38 - 44 | 52 - 60 |
| M16 | 54 - 60 | 74 - 82 |
| M20 | 72 - 82 | 100 - 113 |
