ISO 7042 dimensions — Prevailing torque type all-metal hexagon nuts, style 2
- Edition
- dimensions from the 1997 edition · current edition ISO 7042:2025
- Equivalent
- ISO 7042:2025DIN 980
| Size | PThread pitch | sWidth across flats | eWidth across corners | dwBearing diameter | hThickness | mwWrenching height | daUnderhead diameter | |||
|---|---|---|---|---|---|---|---|---|---|---|
| min | max | min | min | min | max | min | min | max | ||
| M5 | 0.8 | 7.78 | 8 | 8.79 | 6.88 | 4.8 | 5.1 | 3.52 | 5 | 5.75 |
| M6 | 1 | 9.78 | 10 | 11.05 | 8.88 | 5.4 | 6 | 3.92 | 6 | 6.75 |
| M8 | 1.25 | 12.73 | 13 | 14.38 | 11.63 | 7.14 | 8 | 5.15 | 8 | 8.75 |
| M10 | 1.5 | 15.73 | 16 | 17.77 | 14.63 | 8.94 | 10 | 6.43 | 10 | 10.8 |
| M12 | 1.75 | 17.73 | 18 | 20.03 | 16.63 | 11.57 | 12 | 8.3 | 12 | 13 |
| M14 | 2 | 20.67 | 21 | 23.36 | 19.64 | 13.4 | 14.1 | 9.68 | 14 | 15.1 |
| M16 | 2 | 23.67 | 24 | 26.75 | 22.49 | 15.7 | 16.4 | 11.28 | 16 | 17.3 |
| M20 | 2.5 | 29.16 | 30 | 32.95 | 27.7 | 19 | 20.3 | 13.52 | 20 | 21.6 |
| M24 | 3 | 35 | 36 | 39.55 | 33.25 | 22.6 | 23.9 | 16.16 | 24 | 25.9 |
| M30 | 3.5 | 45 | 46 | 50.85 | 42.75 | 27.3 | 30 | 19.44 | 30 | 32.4 |
| M36 | 4 | 53.8 | 55 | 60.79 | 51.11 | 33.1 | 36 | 23.52 | 36 | 38.9 |
Dimensions from ISO 7042:1997. The current edition is ISO 7042:2025.