H6/g5 fit — Precision sliding fit
ISO 286 hole-basis clearance fit. Enter a nominal size to get the limits.
Result
| Upper | Lower | Max | Min | Tol. | |
|---|---|---|---|---|---|
| Hole H6 | +0.013 | 0 | 25.013 | 25.000 | |
| Shaft g5 | −0.007 | −0.016 | 24.993 | 24.984 |
- Max clearance
- 0.029 mm
- Min clearance
- 0.007 mm
- Mean
- +0.018 mm
Fit diagram (µm · zero line = nominal)
About H6/g5
High-precision sliding parts with minimum play: measuring instrument spindles, precision guide pins.
At Ø25 mm the hole H6 measures 0 mm to +0.013 mm and the shaft g5 −0.016 mm to −0.007 mm, giving a clearance of 0.007 mm to 0.029 mm.
How the limits are calculated
Hole H6: fundamental deviation EI = 0, standard tolerance IT6 = 13 µm for 18–30 mm. Shaft g5: fundamental deviation es = -7 µm, IT5 = 9 µm. Clearance = hole − shaft, evaluated at both extremes. Values per ISO 286-1:2010.
H6/g5 limits by size range
| Size (mm) | Hole H6 | Shaft g5 | Clearance min | Clearance max |
|---|---|---|---|---|
| ≤ 3 | +0.006 / 0 | −0.002 / −0.006 | +0.002 | +0.012 |
| 3 – 6 | +0.008 / 0 | −0.004 / −0.009 | +0.004 | +0.017 |
| 6 – 10 | +0.009 / 0 | −0.005 / −0.011 | +0.005 | +0.020 |
| 10 – 18 | +0.011 / 0 | −0.006 / −0.014 | +0.006 | +0.025 |
| 18 – 30 | +0.013 / 0 | −0.007 / −0.016 | +0.007 | +0.029 |
| 30 – 50 | +0.016 / 0 | −0.009 / −0.020 | +0.009 | +0.036 |
| 50 – 80 | +0.019 / 0 | −0.010 / −0.023 | +0.010 | +0.042 |
| 80 – 120 | +0.022 / 0 | −0.012 / −0.027 | +0.012 | +0.049 |
| 120 – 180 | +0.025 / 0 | −0.014 / −0.032 | +0.014 | +0.057 |
| 180 – 250 | +0.029 / 0 | −0.015 / −0.035 | +0.015 | +0.064 |
| 250 – 315 | +0.032 / 0 | −0.017 / −0.040 | +0.017 | +0.072 |
| 315 – 400 | +0.036 / 0 | −0.018 / −0.043 | +0.018 | +0.079 |
| 400 – 500 | +0.040 / 0 | −0.020 / −0.047 | +0.020 | +0.087 |
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.