Values of ISO tolerance classes for shafts

Shaft diameter Tolerance classses
d h3Ⓔ h4Ⓔ js4Ⓔ k4Ⓔ
Nominal Deviations Deviations Deviations Deviations
over incl. high low high low high low high low
mm µm
3 0 –2 0 –3 +1,5 –1,5 +3 0
3 6 0 –2,5 0 –4 +2 –2 +5 +1
6 10 0 –2,5 0 –4 +2 –2 +5 +1
10 18 0 –3 0 –5 +2,5 –2,5 +6 +1
18 30 0 –4 0 –6 +3 –3 +8 +2
30 50 0 –4 0 –7 +3,5 –3,5 +9 +2
50 80 0 –5 0 –8 +4 –4 +10 +2
80 120 0 –6 0 –10 +5 –5 +13 +3
120 180 0 –8 0 –12 +6 –6 +15 +3
180 250 0 –10 0 –14 +7 –7 +18 +4
250 315 0 –12 0 –16 +8 –8 +20 +4
315 400 0 –13 0 –18 +9 –9 +22 +4
400 500 +25 +5

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