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Tolerances, Engineering Design & Limits & Fits
Related Resources:
Geometric Boundaries II GD&T Reference Book
Class IV Transition Fit Tolerance Chart for Holes and Bolts per ANSI 4.1
Locational transition fits and tolerances are a compromise between clearance and interference fits, for applications where accuracy of location is important, but either a small amount of clearance or interference is permissible.
| Class IV Transition Tolerance Chart for Holes and Bolts |
Basic
Diameter |
Hole
Diameter |
Shaft
Diameter |
Clearance
Maximum
Minimum |
| .125 |
.1250
.1258 |
.1249
.1245 |
.0001
.0013 |
| .156 |
.1562
.1570 |
.1561
.1557 |
.0001
.0013 |
| .188 |
.1875
.1883 |
.1874
.1870 |
.0001
.0013 |
| .213 |
.2188
.2196 |
.2187
.2183 |
.0001
.0013 |
| .250 |
.2500
.2508 |
.2499
.2495 |
.0001
.0013 |
| .281 |
.2812
.2820 |
.2811
.2806 |
.0001
.0014 |
| .312 |
.3125
.3133 |
.3124
.3119 |
.0001
.0014 |
| .344 |
.3438
.3446 |
.3437
.3432 |
.0001
.0014 |
| .375 |
.3750
.3758 |
.3749
.3744 |
.0001
.0014 |
| .406 |
.4062
.4070 |
.4061
.4056 |
.0001
.0014 |
| .438 |
.4375
.4383 |
.4374
.4369 |
.0001
.0014 |
| .469 |
.4783
.4791 |
.4687
.4682 |
.0001
.0014 |
| .500 |
.5000
.5008 |
.4999
.4994 |
.0001
.0014 |
| .562 |
.5625
.5634 |
.5623
.5617 |
.0002
.0017 |
| .625 |
.6250
.6259 |
.6248
.6242 |
.0002
.0017 |
| .688 |
.6875
.6884 |
.6873
.6867 |
.0002
.0017 |
| .750 |
.7500
.7509 |
.7498
.7492 |
.0002
.0017 |
| .812 |
.8125
.8134 |
.8123
.8116 |
.0002
.0018 |
| .875 |
.8750
.8759 |
.8748
.8741 |
.0002
.0018 |
| .938 |
.9375
.9384 |
.9373
.9366 |
.0002
.0018 |
| 1.000 |
1.0000
1.0009 |
.9998
.9991 |
.0002
.0018 |
| 1.125 |
1.1250
1.1260 |
1.1248
1.1240 |
.0002
.0020 |
| 1.250 |
1.2500
1.2510 |
1.2498
1.2490 |
.0002
.0020 |
| 1.375 |
1.3750
1.3760 |
1.3748
1.3740 |
.0002
.0020 |
| 1.500 |
1.5000
1.5010 |
1.4998
1.4990 |
.0002
.0020 |
| 1.625 |
1.6250
1.6260 |
1.6248
1.6239 |
.0002
.0021 |
| 1.750 |
1.7500
1.7510 |
1.7498
1.7489 |
.0002
.0021 |
| 1.875 |
1.8750
1.8760 |
1.8748
1.8739 |
.0002
.0021 |
| 2.000 |
2.0000
2.0010 |
1.9998
1.9989 |
.0002
.0021 |
| 2.250 |
2.2500
2.2511 |
2.2498
2.2488 |
.0002
.0023 |
| 2.500 |
2.5000
2.5011 |
2.4998
2.4988 |
.0002
.0023 |
| 2.750 |
2.7500
2.7511 |
2.7498
2.7487 |
.0002
.0024 |
| 3.000 |
3.0000
3.0011 |
2.9998
2.9987 |
.0002
.0024 |
| 3.250 |
3.2500
3.2512 |
3.2498
3.2486 |
.0002
.0026 |
| 3.500 |
3.5000
3.5012 |
3.4998
3.4985 |
.0002
.0026 |
| 3.750 |
3.7500
3.7512 |
3.7498
3.7486 |
.0002
.0026 |
| 4.000 |
4.0000
4.0012 |
3.9996
3.9986 |
.0002
.0026 |
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