ISO 4032 Hexagon regular nuts – Basic dimensions
Selected sizes used for CE Marking under EN 15048
| Dimension (d) | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M33 | M36 |
| Thread pitch (pa) | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 |
| m | 10.37-10.8 | 14.1-14.8 | 16.9-18.0 | 18.1-19.4 | 20.2-21.5 | 22.5-23.8 | 24.3-25.6 | 27.4-28.7 | 29.4-31.0 |
| dw (min) | 16.6 | 22.5 | 27.7 | 31.4 | 33.3 | 38.0 | 42.8 | 46.6 | 51.1 |
| s | 17.73-18.00 | 23.67-24.00 | 29.16-30.00 | 33.00-34.00 | 35.00-36.00 | 40.00-41.00 | 45.00-46.00 | 49.00-50.00 | 53.80-55.00 |
| e (min) | 20.03 | 26.75 | 32.95 | 37.29 | 39.55 | 45.20 | 50.85 | 55.37 | 60.79 |
Dimensions in milimeters