JS7/h6 fit — Locational transition (shaft basis)

ISO 286 shaft-basis transition fit. Enter a nominal size to get the limits.

Nominal size

Unit

Result

Ø25.000 JS7/h6Transition fit

	Upper	Lower	Max	Min	Tol.
Hole JS7	+0.0105	−0.0105	25.0105	24.9895	0.021
Shaft h6	0	−0.013	25.000	24.987	0.013

Max clearance: 0.0235 mm
Max interference: 0.0105 mm
Mean: +0.0065 mm

Fit diagram (µm · zero line = nominal)

Hole tolerance zoneShaft tolerance zoneClearanceInterference

About JS7/h6

Shaft-basis equivalent of H7/js6.

At Ø25 mm the hole JS7 measures −0.0105 mm to +0.0105 mm and the shaft h6 −0.013 mm to 0 mm, giving between 0.0105 mm interference and 0.0235 mm clearance.

How the limits are calculated

Hole JS7: fundamental deviation ES/EI per ISO 286-1 Table 2, standard tolerance IT7 = 21 µm for 18–30 mm. Shaft h6: fundamental deviation es = 0, IT6 = 13 µm. Clearance = hole − shaft, evaluated at both extremes. Values per ISO 286-1:2010.

JS7/h6 limits by size range

Size (mm)	Hole JS7	Shaft h6	Clearance min	Clearance max
≤ 3	+0.005 / −0.005	0 / −0.006	−0.005	+0.011
3 – 6	+0.006 / −0.006	0 / −0.008	−0.006	+0.014
6 – 10	+0.0075 / −0.0075	0 / −0.009	−0.0075	+0.0165
10 – 18	+0.009 / −0.009	0 / −0.011	−0.009	+0.020
18 – 30	+0.0105 / −0.0105	0 / −0.013	−0.0105	+0.0235
30 – 50	+0.0125 / −0.0125	0 / −0.016	−0.0125	+0.0285
50 – 80	+0.015 / −0.015	0 / −0.019	−0.015	+0.034
80 – 120	+0.0175 / −0.0175	0 / −0.022	−0.0175	+0.0395
120 – 180	+0.020 / −0.020	0 / −0.025	−0.020	+0.045
180 – 250	+0.023 / −0.023	0 / −0.029	−0.023	+0.052
250 – 315	+0.026 / −0.026	0 / −0.032	−0.026	+0.058
315 – 400	+0.0285 / −0.0285	0 / −0.036	−0.0285	+0.0645
400 – 500	+0.0315 / −0.0315	0 / −0.040	−0.0315	+0.0715

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.