DINnuts
DIN 439 Hexagon Thin Nut (Jam Nut)
A low profile hex nut used as a lock nut against a full nut, or where axial space is tight. Because it carries fewer threads it is not rated for full service load on its own.
Dimensions12 sizes · millimetres
| Thread d | Pitch P (mm) | Width across flats s (mm) | Nut height m (mm) |
|---|---|---|---|
| M4 | 0.7 | 7 | 2.2 |
| M5 | 0.8 | 8 | 2.7 |
| M6 | 1 | 10 | 3.2 |
| M8 | 1.25 | 13 | 4 |
| M10 | 1.5 | 16 | 5 |
| M12 | 1.75 | 18 | 6 |
| M14 | 2 | 21 | 7 |
| M16 | 2 | 24 | 8 |
| M18 | 2.5 | 27 | 9 |
| M20 | 2.5 | 30 | 10 |
| M22 | 2.5 | 34 | 11 |
| M24 | 3 | 36 | 12 |
Nominal dimensions in millimetres as published in DIN 439. Tolerances, material requirements and marking are defined separately by the issuing body.
Available sizeslinked to individual specification pages
M14
M16
M24