DIN 934 / ISO 4032 hex nut: dimensions from M3 to M24
Hexagon nut, style 1, with coarse metric thread, from M3 to M24. Pick a size to get its dimensions and CAD files; where DIN 934 differs, switch to the DIN version.
ISO 4032 / DIN 934 hexagon nut dimensions
| Size | Pmm | snom, mm | mmax, mm | emin, mm | dwmin, mm |
|---|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 2.4 | 6.01 | 4.6 |
| M4 | 0.7 | 7 | 3.2 | 7.66 | 5.9 |
| M5 | 0.8 | 8 | 4.7 | 8.79 | 6.9 |
| M6 | 1 | 10 | 5.2 | 11.05 | 8.9 |
| M8 | 1.25 | 13 | 6.8 | 14.38 | 11.6 |
| M10 | 1.5 | 16 | 8.4 | 17.77 | 14.6 |
| M12 | 1.75 | 18 | 10.8 | 20.03 | 16.6 |
| M14 | 2 | 21 | 12.8 | 23.36 | 19.6 |
| M16 | 2 | 24 | 14.8 | 26.75 | 22.5 |
| M18 | 2.5 | 27 | 15.8 | 29.56 | 24.9 |
| M20 | 2.5 | 30 | 18 | 32.95 | 27.7 |
| M22 | 2.5 | 34 | 19.4 | 37.29 | 31.4 |
| M24 | 3 | 36 | 21.5 | 39.55 | 33.3 |
Where DIN 934 differs from ISO 4032
| Size | sISO 4032 | sDIN 934 | mISO 4032 | mDIN 934 |
|---|---|---|---|---|
| M5 | 8 | 8 | 4.7 | 4 |
| M6 | 10 | 10 | 5.2 | 5 |
| M8 | 13 | 13 | 6.8 | 6.5 |
| M10 | 16 | 17 | 8.4 | 8 |
| M12 | 18 | 19 | 10.8 | 10 |
| M14 | 21 | 22 | 12.8 | 11 |
| M16 | 24 | 24 | 14.8 | 13 |
| M18 | 27 | 27 | 15.8 | 15 |
| M20 | 30 | 30 | 18 | 16 |
| M22 | 34 | 32 | 19.4 | 18 |
| M24 | 36 | 36 | 21.5 | 19 |
DIN 934 is withdrawn but parts to it are still sold. Only the sizes listed here differ; in every other size both standards give the same part. Pick the standard in the selector above to get the matching CAD files.
Dimensions in millimetres unless stated. Select a row to load its CAD files above.
ISO 4032 vs DIN 934
DIN 934 was replaced by ISO 4032. The width across flats changes in the same four sizes as the hex screws (M10, M12, M14 and M22), and the nut height is different from M5 upwards: the ISO nut is taller. At M10 the ISO 4032 nut is 16 mm across flats and up to 8.4 mm high, the DIN 934 nut 17 mm and 8 mm. The main table follows ISO 4032; the DIN 934 sizes that differ are listed below it and have their own CAD files.
Hexagon nut dimensions on a drawing
Across flats s is the spanner size and across corners e the largest width, which sets the clearance around the nut. The bearing face diameter dw is the flat ring under the nut that presses on the part or the washer. The DXF and DWG show the nut in plan and side view, with the thread drawn as a thin circle at the nominal diameter on the THREAD layer. The metric nut size chart compares this nut with the thin, lock, flange and cap nuts.
DIN 934 nuts: common questions
- What spanner fits a DIN 934 M10 nut?
- 17 mm. The ISO 4032 M10 nut that replaced it takes a 16 mm spanner, so check which one you have.
- Can I mix ISO 4032 nuts with DIN 933 screws?
- The thread is the same, so they fit. The spanner size can differ at M10, M12, M14 and M22, which matters only for the tools and the clearances.