> 6 to 8 mm
2 x 2 mm key
t1 1.2 mm / t2 1 mm
Finder
Keyway Fit Finder
Enter a shaft diameter to find the DIN 6885-1 parallel key row. Choose the fit class to show the tolerance note while keeping the nominal key, shaft depth and hub depth visible.
Standard key
Over 38 to 44 mm shaft
12 x 8 mm key
Shaft N9, hub JS9, key h9. Usual fixed-key fit.
- Shaft depth t1
- 5 mm
- Hub depth t2
- 3.3 mm
- Shaft under keyway
- 35 mm
- Hub over keyway
- 43.3 mm
DIN 6885-1 rows
Nominal geometry only. Width tolerances come from the fit class.
> 8 to 10 mm
3 x 3 mm key
t1 1.8 mm / t2 1.4 mm
> 10 to 12 mm
4 x 4 mm key
t1 2.5 mm / t2 1.8 mm
> 12 to 17 mm
5 x 5 mm key
t1 3 mm / t2 2.3 mm
> 17 to 22 mm
6 x 6 mm key
t1 3.5 mm / t2 2.8 mm
> 22 to 30 mm
8 x 7 mm key
t1 4 mm / t2 3.3 mm
> 30 to 38 mm
10 x 8 mm key
t1 5 mm / t2 3.3 mm
> 38 to 44 mm
12 x 8 mm key
t1 5 mm / t2 3.3 mm
> 44 to 50 mm
14 x 9 mm key
t1 5.5 mm / t2 3.8 mm
> 50 to 58 mm
16 x 10 mm key
t1 6 mm / t2 4.3 mm
> 58 to 65 mm
18 x 11 mm key
t1 7 mm / t2 4.4 mm
> 65 to 75 mm
20 x 12 mm key
t1 7.5 mm / t2 4.9 mm
> 75 to 85 mm
22 x 14 mm key
t1 9 mm / t2 5.4 mm
> 85 to 95 mm
25 x 14 mm key
t1 9 mm / t2 5.4 mm
> 95 to 110 mm
28 x 16 mm key
t1 10 mm / t2 6.4 mm
> 110 to 130 mm
32 x 18 mm key
t1 11 mm / t2 7.4 mm
Geometry first, load check second
This finder selects the standard geometry. Key length, torque capacity, shaft stress and hub fit still need separate checks. Use the keyway dimension calculator for the full result panel.