ISOnuts
ISO 10511 Prevailing Torque Hexagon Nut with Non-Metallic Insert
ISO equivalent of DIN 985. Reuse is limited — the prevailing torque drops each time the insert is run over the thread.
Dimensions12 sizes · millimetres
| Thread d | Pitch P (mm) | Width across flats s (mm) | Nut height m (mm) | Overall height h (max) (mm) |
|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 4 | 4.5 |
| M4 | 0.7 | 7 | 5 | 6 |
| M5 | 0.8 | 8 | 6 | 6.8 |
| M6 | 1 | 10 | 7.5 | 8 |
| M8 | 1.25 | 13 | 9.5 | 9.9 |
| M10 | 1.5 | 16 | 12.5 | 12.8 |
| M12 | 1.75 | 18 | 15 | 16 |
| M14 | 2 | 21 | 17 | 18.5 |
| M16 | 2 | 24 | 19 | 20.5 |
| M18 | 2.5 | 27 | 21 | 23 |
| M20 | 2.5 | 30 | 22 | 25 |
| M24 | 3 | 36 | 26 | 29 |
Nominal dimensions in millimetres as published in ISO 10511. Tolerances, material requirements and marking are defined separately by the issuing body.