p6 tolerance (shaft, IT6)
Shaft tolerance class p6 per ISO 286-1:2010: fundamental deviation ei +6 … +68, grade IT6 (6 µm at ≤ 3 mm to 40 µm at 400–500 mm). For an exact size, open the calculator with p6 selected.
- Type
- Shaft
- Grade
- IT6
- Tolerance
- 6 … 40 µm
- Fund. deviation
- ei +6 … +68 µm
p6 limits by size range
| Size (mm) | Upper (µm) | Lower (µm) | Ø max (mm) | Ø min (mm) | Upper (mm) | Lower (mm) | Dev. (in) |
|---|---|---|---|---|---|---|---|
| ≤ 3 | +12 | +6 | 3.012 | 3.006 | +0.012 | +0.006 | +0.00047 / +0.00024 |
| 3 – 6 | +20 | +12 | 6.020 | 6.012 | +0.020 | +0.012 | +0.00079 / +0.00047 |
| 6 – 10 | +24 | +15 | 10.024 | 10.015 | +0.024 | +0.015 | +0.00094 / +0.00059 |
| 10 – 14 | +29 | +18 | 14.029 | 14.018 | +0.029 | +0.018 | +0.00114 / +0.00071 |
| 14 – 18 | +29 | +18 | 18.029 | 18.018 | +0.029 | +0.018 | +0.00114 / +0.00071 |
| 18 – 24 | +35 | +22 | 24.035 | 24.022 | +0.035 | +0.022 | +0.00138 / +0.00087 |
| 24 – 30 | +35 | +22 | 30.035 | 30.022 | +0.035 | +0.022 | +0.00138 / +0.00087 |
| 30 – 40 | +42 | +26 | 40.042 | 40.026 | +0.042 | +0.026 | +0.00165 / +0.00102 |
| 40 – 50 | +42 | +26 | 50.042 | 50.026 | +0.042 | +0.026 | +0.00165 / +0.00102 |
| 50 – 65 | +51 | +32 | 65.051 | 65.032 | +0.051 | +0.032 | +0.00201 / +0.00126 |
| 65 – 80 | +51 | +32 | 80.051 | 80.032 | +0.051 | +0.032 | +0.00201 / +0.00126 |
| 80 – 100 | +59 | +37 | 100.059 | 100.037 | +0.059 | +0.037 | +0.00232 / +0.00146 |
| 100 – 120 | +59 | +37 | 120.059 | 120.037 | +0.059 | +0.037 | +0.00232 / +0.00146 |
| 120 – 140 | +68 | +43 | 140.068 | 140.043 | +0.068 | +0.043 | +0.00268 / +0.00169 |
| 140 – 160 | +68 | +43 | 160.068 | 160.043 | +0.068 | +0.043 | +0.00268 / +0.00169 |
| 160 – 180 | +68 | +43 | 180.068 | 180.043 | +0.068 | +0.043 | +0.00268 / +0.00169 |
| 180 – 200 | +79 | +50 | 200.079 | 200.050 | +0.079 | +0.050 | +0.00311 / +0.00197 |
| 200 – 225 | +79 | +50 | 225.079 | 225.050 | +0.079 | +0.050 | +0.00311 / +0.00197 |
| 225 – 250 | +79 | +50 | 250.079 | 250.050 | +0.079 | +0.050 | +0.00311 / +0.00197 |
| 250 – 280 | +88 | +56 | 280.088 | 280.056 | +0.088 | +0.056 | +0.00346 / +0.00220 |
| 280 – 315 | +88 | +56 | 315.088 | 315.056 | +0.088 | +0.056 | +0.00346 / +0.00220 |
| 315 – 355 | +98 | +62 | 355.098 | 355.062 | +0.098 | +0.062 | +0.00386 / +0.00244 |
| 355 – 400 | +98 | +62 | 400.098 | 400.062 | +0.098 | +0.062 | +0.00386 / +0.00244 |
| 400 – 450 | +108 | +68 | 450.108 | 450.068 | +0.108 | +0.068 | +0.00425 / +0.00268 |
| 450 – 500 | +108 | +68 | 500.108 | 500.068 | +0.108 | +0.068 | +0.00425 / +0.00268 |
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 p6
p6 denotes a shaft tolerance zone with press deviation in the ISO 286 system. It is used in H7/p6 (Parts that must stay fixed without transmitting large torque: bushes pressed into housings, dowels, gears on shafts with a key.).
At Ø25 mm p6 is +0.035 / +0.022 mm, i.e. 25.022 to 25.035 mm.
How the limits are calculated
p6 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.