| Tolerances Used for Standard Metric and Inch Size Bores |
| Metric Size Bores |
| Hole Diameter in Millimeters |
H 7 | H 8 | H 9 |
H 11 |
H 13 |
| 1 — 3 | +0.010 –0 | +0.014 –0 | +0.025 –0 |
+0.060
–0 |
+0.140 –0 |
| 4 — 6 | +0.012 –0 | +0.018 –0 | +0.030 –0 |
+0.075
–0 |
+0.180 –0 |
| 7 — 10 | +0.015 –0 | +0.022 –0 | +0.036 –0 |
+0.090
–0 |
+0.220 –0 |
| 11 — 18 | +0.018 –0 | +0.027 –0 | +0.043 –0 |
+0.110
–0 |
+0.270 –0 |
| 19 — 30 | +0.021 –0 | +0.033 –0 | +0.052 –0 |
+0.130
–0 |
+0.330 –0 |
| 31 — 50 | +0.025 –0 | +0.039 –0 | +0.062 –0 |
+0.160
–0 |
+0.380 –0 |
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| Inch Size Bores |
| Bore Size |
Tolerance |
| .250 – 1.00 inches | + .001 inches – 0 |
| over 1.00 inches | + .002 inches – 0 |
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