H11/h11 fit — Loose locational fit
ISO 286 hole-basis clearance fit. Enter a nominal size to get the limits.
Result
| Upper | Lower | Max | Min | Tol. | |
|---|---|---|---|---|---|
| Hole H11 | +0.130 | 0 | 25.130 | 25.000 | |
| Shaft h11 | 0 | −0.130 | 25.000 | 24.870 |
- Max clearance
- 0.260 mm
- Min clearance
- 0.000 mm
- Mean
- +0.130 mm
Fit diagram (µm · zero line = nominal)
About H11/h11
Parts that must be located but need no precision: spacers, washers, covers on rough shafts.
At Ø25 mm the hole H11 measures 0 mm to +0.130 mm and the shaft h11 −0.130 mm to 0 mm, giving a clearance of 0.000 mm to 0.260 mm.
How the limits are calculated
Hole H11: fundamental deviation EI = 0, standard tolerance IT11 = 130 µm for 18–30 mm. Shaft h11: fundamental deviation es = 0, IT11 = 130 µm. Clearance = hole − shaft, evaluated at both extremes. Values per ISO 286-1:2010.
H11/h11 limits by size range
| Size (mm) | Hole H11 | Shaft h11 | Clearance min | Clearance max |
|---|---|---|---|---|
| ≤ 3 | +0.060 / 0 | 0 / −0.060 | 0 | +0.120 |
| 3 – 6 | +0.075 / 0 | 0 / −0.075 | 0 | +0.150 |
| 6 – 10 | +0.090 / 0 | 0 / −0.090 | 0 | +0.180 |
| 10 – 18 | +0.110 / 0 | 0 / −0.110 | 0 | +0.220 |
| 18 – 30 | +0.130 / 0 | 0 / −0.130 | 0 | +0.260 |
| 30 – 50 | +0.160 / 0 | 0 / −0.160 | 0 | +0.320 |
| 50 – 80 | +0.190 / 0 | 0 / −0.190 | 0 | +0.380 |
| 80 – 120 | +0.220 / 0 | 0 / −0.220 | 0 | +0.440 |
| 120 – 180 | +0.250 / 0 | 0 / −0.250 | 0 | +0.500 |
| 180 – 250 | +0.290 / 0 | 0 / −0.290 | 0 | +0.580 |
| 250 – 315 | +0.320 / 0 | 0 / −0.320 | 0 | +0.640 |
| 315 – 400 | +0.360 / 0 | 0 / −0.360 | 0 | +0.720 |
| 400 – 500 | +0.400 / 0 | 0 / −0.400 | 0 | +0.800 |
Deviations in mm at the upper end of each range; negative clearance = interference. Clearance columns are shown on wider screens. Sub-ranges (e.g. 18–24 / 24–30) can differ for r, s, t, u, v, x, y, z — use the calculator for the exact size.