s6 tolerance (shaft, IT6)
Shaft tolerance class s6 per ISO 286-1:2010: fundamental deviation ei +14 … +252, grade IT6 (6 µm at ≤ 3 mm to 40 µm at 400–500 mm). For an exact size, open the calculator with s6 selected.
- Type
- Shaft
- Grade
- IT6
- Tolerance
- 6 … 40 µm
- Fund. deviation
- ei +14 … +252 µm
s6 limits by size range
| Size (mm) | Upper (µm) | Lower (µm) | Ø max (mm) | Ø min (mm) | Upper (mm) | Lower (mm) | Dev. (in) |
|---|---|---|---|---|---|---|---|
| ≤ 3 | +20 | +14 | 3.020 | 3.014 | +0.020 | +0.014 | +0.00079 / +0.00055 |
| 3 – 6 | +27 | +19 | 6.027 | 6.019 | +0.027 | +0.019 | +0.00106 / +0.00075 |
| 6 – 10 | +32 | +23 | 10.032 | 10.023 | +0.032 | +0.023 | +0.00126 / +0.00091 |
| 10 – 14 | +39 | +28 | 14.039 | 14.028 | +0.039 | +0.028 | +0.00154 / +0.00110 |
| 14 – 18 | +39 | +28 | 18.039 | 18.028 | +0.039 | +0.028 | +0.00154 / +0.00110 |
| 18 – 24 | +48 | +35 | 24.048 | 24.035 | +0.048 | +0.035 | +0.00189 / +0.00138 |
| 24 – 30 | +48 | +35 | 30.048 | 30.035 | +0.048 | +0.035 | +0.00189 / +0.00138 |
| 30 – 40 | +59 | +43 | 40.059 | 40.043 | +0.059 | +0.043 | +0.00232 / +0.00169 |
| 40 – 50 | +59 | +43 | 50.059 | 50.043 | +0.059 | +0.043 | +0.00232 / +0.00169 |
| 50 – 65 | +72 | +53 | 65.072 | 65.053 | +0.072 | +0.053 | +0.00283 / +0.00209 |
| 65 – 80 | +78 | +59 | 80.078 | 80.059 | +0.078 | +0.059 | +0.00307 / +0.00232 |
| 80 – 100 | +93 | +71 | 100.093 | 100.071 | +0.093 | +0.071 | +0.00366 / +0.00280 |
| 100 – 120 | +101 | +79 | 120.101 | 120.079 | +0.101 | +0.079 | +0.00398 / +0.00311 |
| 120 – 140 | +117 | +92 | 140.117 | 140.092 | +0.117 | +0.092 | +0.00461 / +0.00362 |
| 140 – 160 | +125 | +100 | 160.125 | 160.100 | +0.125 | +0.100 | +0.00492 / +0.00394 |
| 160 – 180 | +133 | +108 | 180.133 | 180.108 | +0.133 | +0.108 | +0.00524 / +0.00425 |
| 180 – 200 | +151 | +122 | 200.151 | 200.122 | +0.151 | +0.122 | +0.00594 / +0.00480 |
| 200 – 225 | +159 | +130 | 225.159 | 225.130 | +0.159 | +0.130 | +0.00626 / +0.00512 |
| 225 – 250 | +169 | +140 | 250.169 | 250.140 | +0.169 | +0.140 | +0.00665 / +0.00551 |
| 250 – 280 | +190 | +158 | 280.190 | 280.158 | +0.190 | +0.158 | +0.00748 / +0.00622 |
| 280 – 315 | +202 | +170 | 315.202 | 315.170 | +0.202 | +0.170 | +0.00795 / +0.00669 |
| 315 – 355 | +226 | +190 | 355.226 | 355.190 | +0.226 | +0.190 | +0.00890 / +0.00748 |
| 355 – 400 | +244 | +208 | 400.244 | 400.208 | +0.244 | +0.208 | +0.00961 / +0.00819 |
| 400 – 450 | +272 | +232 | 450.272 | 450.232 | +0.272 | +0.232 | +0.01071 / +0.00913 |
| 450 – 500 | +292 | +252 | 500.292 | 500.252 | +0.292 | +0.252 | +0.01150 / +0.00992 |
Deviations at the upper end of each range (Ø columns use that size); use the calculator for the exact size. — : not defined by ISO 286 for that size. Upper/Lower (mm) and inch columns are shown on wider screens.
About s6
s6 denotes a shaft tolerance zone with heavy interference deviation in the ISO 286 system. It is used in H7/s6 (Permanent press fit for steel parts transmitting torque without keys: gear rims, bearing bushes, shaft-hub connections.).
At Ø25 mm s6 is +0.048 / +0.035 mm, i.e. 25.035 to 25.048 mm.
How the limits are calculated
s6 uses grade IT6 (a standard tolerance of 13 µm at 18–30 mm). Fundamental deviation: ei is tabulated directly by ISO 286-1 Table 2; es = ei + IT6. See the fundamental deviation table for every letter. Values per ISO 286-1:2010.