Engineering Tools
Reference data for specifying and sourcing fasteners correctly — the numbers a procurement or design engineer actually needs.
DIN 9021 — Large series flat washer
Also referenced as: ISO 7093
Approximated dimensionsLarger outer diameter than a standard DIN 125 washer, for spreading load over soft or oversized-hole material.
| Size | Outer diameter (D) | Inner diameter (d) | Thickness (s) |
|---|---|---|---|
| M6 | 18 mm | 6.4 mm | 1.6 mm |
| M8 | 24 mm | 8.4 mm | 2 mm |
| M10 | 30 mm | 10.5 mm | 2.5 mm |
| M12 | 37 mm | 13 mm | 3 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 | 2.79 g |
| M8 | 6.23 g |
| M10 | 12.17 g |
| M12 | 22.2 g |
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