h13 tolerance (shaft, IT13)
Shaft tolerance class h13 per ISO 286-1:2010: fundamental deviation es = 0, grade IT13 (140 µm at ≤ 3 mm to 970 µm at 400–500 mm). For an exact size, open the calculator with h13 selected.
- Type
- Shaft
- Grade
- IT13
- Tolerance
- 140 … 970 µm
- Fund. deviation
- es = 0
h13 limits by size range
| Size (mm) | Upper (µm) | Lower (µm) | Ø max (mm) | Ø min (mm) | Upper (mm) | Lower (mm) | Dev. (in) |
|---|---|---|---|---|---|---|---|
| ≤ 3 | 0 | −140 | 3.000 | 2.860 | 0 | −0.140 | 0 / −0.00551 |
| 3 – 6 | 0 | −180 | 6.000 | 5.820 | 0 | −0.180 | 0 / −0.00709 |
| 6 – 10 | 0 | −220 | 10.000 | 9.780 | 0 | −0.220 | 0 / −0.00866 |
| 10 – 14 | 0 | −270 | 14.000 | 13.730 | 0 | −0.270 | 0 / −0.01063 |
| 14 – 18 | 0 | −270 | 18.000 | 17.730 | 0 | −0.270 | 0 / −0.01063 |
| 18 – 24 | 0 | −330 | 24.000 | 23.670 | 0 | −0.330 | 0 / −0.01299 |
| 24 – 30 | 0 | −330 | 30.000 | 29.670 | 0 | −0.330 | 0 / −0.01299 |
| 30 – 40 | 0 | −390 | 40.000 | 39.610 | 0 | −0.390 | 0 / −0.01535 |
| 40 – 50 | 0 | −390 | 50.000 | 49.610 | 0 | −0.390 | 0 / −0.01535 |
| 50 – 65 | 0 | −460 | 65.000 | 64.540 | 0 | −0.460 | 0 / −0.01811 |
| 65 – 80 | 0 | −460 | 80.000 | 79.540 | 0 | −0.460 | 0 / −0.01811 |
| 80 – 100 | 0 | −540 | 100.000 | 99.460 | 0 | −0.540 | 0 / −0.02126 |
| 100 – 120 | 0 | −540 | 120.000 | 119.460 | 0 | −0.540 | 0 / −0.02126 |
| 120 – 140 | 0 | −630 | 140.000 | 139.370 | 0 | −0.630 | 0 / −0.02480 |
| 140 – 160 | 0 | −630 | 160.000 | 159.370 | 0 | −0.630 | 0 / −0.02480 |
| 160 – 180 | 0 | −630 | 180.000 | 179.370 | 0 | −0.630 | 0 / −0.02480 |
| 180 – 200 | 0 | −720 | 200.000 | 199.280 | 0 | −0.720 | 0 / −0.02835 |
| 200 – 225 | 0 | −720 | 225.000 | 224.280 | 0 | −0.720 | 0 / −0.02835 |
| 225 – 250 | 0 | −720 | 250.000 | 249.280 | 0 | −0.720 | 0 / −0.02835 |
| 250 – 280 | 0 | −810 | 280.000 | 279.190 | 0 | −0.810 | 0 / −0.03189 |
| 280 – 315 | 0 | −810 | 315.000 | 314.190 | 0 | −0.810 | 0 / −0.03189 |
| 315 – 355 | 0 | −890 | 355.000 | 354.110 | 0 | −0.890 | 0 / −0.03504 |
| 355 – 400 | 0 | −890 | 400.000 | 399.110 | 0 | −0.890 | 0 / −0.03504 |
| 400 – 450 | 0 | −970 | 450.000 | 449.030 | 0 | −0.970 | 0 / −0.03819 |
| 450 – 500 | 0 | −970 | 500.000 | 499.030 | 0 | −0.970 | 0 / −0.03819 |
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 h13
h13 denotes a shaft tolerance zone with zero line deviation in the ISO 286 system.
At Ø25 mm h13 is 0 / −0.330 mm, i.e. 24.670 to 25.000 mm.
How the limits are calculated
h13 uses grade IT13 (a standard tolerance of 330 µm at 18–30 mm). Fundamental deviation: es = 0: the tolerance zone sits entirely below the nominal size, and IT13 sets its width. See the fundamental deviation table for every letter. Values per ISO 286-1:2010.