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Class I - Loose Fit Tolerance Chart |
Shaft - Hole Class Grade Tolerances | Mechanical Tolerance Standards Charts
Class I | Class II | Class III | Class IV | Class V
Basic
Diameter |
Hole
Diameter |
Shaft
Diameter |
Clearance
Maximum
Minimum |
| .125 |
.1250
.1258 |
.1246
.1236 |
.0004
.0022 |
| .156 |
.1562
.1578 |
.1558
.1548 |
.0004
.0030 |
| .188 |
.1875
.1891 |
.1871
.1861 |
.0004
.0030 |
| .213 |
.2188
.2204 |
.2184
.2174 |
.0004
.0030 |
| .250 |
.2500
.2516 |
.2496
.2486 |
.0004
.0030 |
| .281 |
.2812
.2832 |
.2805
.2794 |
.0007
.0038 |
| .312 |
.3125
.3145 |
.3118
.3107 |
.0007
.0038 |
| .344 |
.3438
.3458 |
.3431
.3420 |
.0007
.0038 |
| .375 |
.3750
.3770 |
.3743
.3732 |
.0007
.0038 |
| .406 |
.4062
.4082 |
.4055
.4044 |
.0007
.0038 |
| .438 |
.4375
.4395 |
.4368
.4357 |
.0007
.0038 |
| .469 |
.4688
.4708 |
.4681
.4670 |
.0007
.0038 |
| .500 |
.5000
.5020 |
.4993
.4982 |
.0007
.0038 |
| .562 |
.5625
.5650 |
.5615
.5603 |
.0010
.0047 |
| .625 |
.6250
.6275 |
.6240
.6228 |
.0010
.0047 |
| .688 |
.6875
.6900 |
.6865
.6853 |
.0010
.0047 |
| .750 |
.7500
.7525 |
.7490
.7478 |
.0010
.0047 |
| .812 |
.8125
.8155 |
.8113
.8100 |
.0012
.0055 |
| .875 |
.8750
.8780 |
.8738
.8725 |
.0012
.0055 |
| .938 |
.9375
.9405 |
.9363
.9350 |
.0012
.0055 |
| 1.000 |
1.0000
1.0030 |
.9988
.9975 |
.0012
.0055 |
| 1.125 |
1.1250
1.1285 |
1.1235
1.1218 |
.0015
.0067 |
| 1.250 |
1.2500
1.2535 |
1.2485
1.2468 |
.0015
.0067 |
| 1.375 |
1.3750
1.3785 |
1.3735
1.3718 |
.0015
.0067 |
| 1.500 |
1.5000
1.5036 |
1.4985
1.4968 |
.0015
.0068 |
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