Engineering Tools
Reference data for specifying and sourcing fasteners correctly — the numbers a procurement or design engineer actually needs.
DIN 439 — Thin / jam nut
Also referenced as: ISO 4035
Approximated dimensionsSame across-flats as a standard hex nut, roughly 55% of the height — used as a lock nut behind a standard nut. Height figures below are approximated from the DIN 934 height.
| Size | Across flats (S) | Height (approx.) |
|---|---|---|
| M6 | 10 mm | 2.8 mm |
| M8 | 13 mm | 3.6 mm |
| M10 | 17 mm | 4.4 mm |
| M12 | 19 mm | 5.5 mm |
Weight per piece (mild steel)
Computed the same way as the Weight Calculator — for other materials, use that tool directly.
| Size | Weight (g) |
|---|---|
| M6 | 1.44 g |
| M8 | 3.08 g |
| M10 | 6.64 g |
| M12 | 9.86 g |
| M16 | 19.18 g |
| M20 | 36.92 g |
| M24 | 63.11 g |
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