Engineering Tools
Reference data for specifying and sourcing fasteners correctly — the numbers a procurement or design engineer actually needs.
DIN 6885 — Parallel key (key stock)
Also referenced as: ISO 773
Sourced dimensionsRectangular key that sits in matching keyways on a shaft and hub, transmitting rotational torque between them (e.g. a pulley onto a motor shaft).
Illustrative — not to scale
| Shaft diameter range | Key width x height (b x h) |
|---|---|
| 6–8 mm | 2 x 2 mm |
| 8–10 mm | 3 x 3 mm |
| 10–12 mm | 4 x 4 mm |
| 12–17 mm | 5 x 5 mm |
| 17–22 mm | 6 x 6 mm |
| 22–30 mm | 8 x 7 mm |
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