D11 tolerance (hole, IT11)
Hole tolerance class D11 per ISO 286-1:2010: fundamental deviation EI +20 … +230, grade IT11 (60 µm at ≤ 3 mm to 400 µm at 400–500 mm). For an exact size, open the calculator with D11 selected.
- Type
- Hole
- Grade
- IT11
- Tolerance
- 60 … 400 µm
- Fund. deviation
- EI +20 … +230 µm
D11 limits by size range
| Size (mm) | Upper (µm) | Lower (µm) | Ø max (mm) | Ø min (mm) | Upper (mm) | Lower (mm) | Dev. (in) |
|---|---|---|---|---|---|---|---|
| ≤ 3 | +80 | +20 | 3.080 | 3.020 | +0.080 | +0.020 | +0.00315 / +0.00079 |
| 3 – 6 | +105 | +30 | 6.105 | 6.030 | +0.105 | +0.030 | +0.00413 / +0.00118 |
| 6 – 10 | +130 | +40 | 10.130 | 10.040 | +0.130 | +0.040 | +0.00512 / +0.00157 |
| 10 – 14 | +160 | +50 | 14.160 | 14.050 | +0.160 | +0.050 | +0.00630 / +0.00197 |
| 14 – 18 | +160 | +50 | 18.160 | 18.050 | +0.160 | +0.050 | +0.00630 / +0.00197 |
| 18 – 24 | +195 | +65 | 24.195 | 24.065 | +0.195 | +0.065 | +0.00768 / +0.00256 |
| 24 – 30 | +195 | +65 | 30.195 | 30.065 | +0.195 | +0.065 | +0.00768 / +0.00256 |
| 30 – 40 | +240 | +80 | 40.240 | 40.080 | +0.240 | +0.080 | +0.00945 / +0.00315 |
| 40 – 50 | +240 | +80 | 50.240 | 50.080 | +0.240 | +0.080 | +0.00945 / +0.00315 |
| 50 – 65 | +290 | +100 | 65.290 | 65.100 | +0.290 | +0.100 | +0.01142 / +0.00394 |
| 65 – 80 | +290 | +100 | 80.290 | 80.100 | +0.290 | +0.100 | +0.01142 / +0.00394 |
| 80 – 100 | +340 | +120 | 100.340 | 100.120 | +0.340 | +0.120 | +0.01339 / +0.00472 |
| 100 – 120 | +340 | +120 | 120.340 | 120.120 | +0.340 | +0.120 | +0.01339 / +0.00472 |
| 120 – 140 | +395 | +145 | 140.395 | 140.145 | +0.395 | +0.145 | +0.01555 / +0.00571 |
| 140 – 160 | +395 | +145 | 160.395 | 160.145 | +0.395 | +0.145 | +0.01555 / +0.00571 |
| 160 – 180 | +395 | +145 | 180.395 | 180.145 | +0.395 | +0.145 | +0.01555 / +0.00571 |
| 180 – 200 | +460 | +170 | 200.460 | 200.170 | +0.460 | +0.170 | +0.01811 / +0.00669 |
| 200 – 225 | +460 | +170 | 225.460 | 225.170 | +0.460 | +0.170 | +0.01811 / +0.00669 |
| 225 – 250 | +460 | +170 | 250.460 | 250.170 | +0.460 | +0.170 | +0.01811 / +0.00669 |
| 250 – 280 | +510 | +190 | 280.510 | 280.190 | +0.510 | +0.190 | +0.02008 / +0.00748 |
| 280 – 315 | +510 | +190 | 315.510 | 315.190 | +0.510 | +0.190 | +0.02008 / +0.00748 |
| 315 – 355 | +570 | +210 | 355.570 | 355.210 | +0.570 | +0.210 | +0.02244 / +0.00827 |
| 355 – 400 | +570 | +210 | 400.570 | 400.210 | +0.570 | +0.210 | +0.02244 / +0.00827 |
| 400 – 450 | +630 | +230 | 450.630 | 450.230 | +0.630 | +0.230 | +0.02480 / +0.00906 |
| 450 – 500 | +630 | +230 | 500.630 | 500.230 | +0.630 | +0.230 | +0.02480 / +0.00906 |
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 D11
D11 denotes a hole tolerance zone with running clearance deviation in the ISO 286 system.
At Ø25 mm D11 is +0.195 / +0.065 mm, i.e. 25.065 to 25.195 mm.
How the limits are calculated
D11 uses grade IT11 (a standard tolerance of 130 µm at 18–30 mm). Fundamental deviation: EI = −es of the same shaft letter; IT11 sets the width above EI. See the fundamental deviation table for every letter. Values per ISO 286-1:2010.