Class IV Transition Tolerance Chart for Holes and Bolts

Related Resources:

Geometric Boundaries II GD&T Reference Book

Class IV Transition Fit Tolerance Chart for Holes and Bolts per McDonald Douglas Design Guide "Machining Tolerances".

Units given in inches

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
 BasicDiameter HoleDiameter ShaftDiameter ClearanceMaximumMinimum .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 1.00001.0009 .9998.9991 .0002.0018 1.125 1.12501.1260 1.12481.1240 .0002.0020 1.250 1.25001.2510 1.24981.2490 .0002.0020 1.375 1.37501.3760 1.37481.3740 .0002.0020 1.500 1.50001.5010 1.49981.4990 .0002.0020 1.625 1.62501.6260 1.62481.6239 .0002.0021 1.750 1.75001.7510 1.74981.7489 .0002.0021 1.875 1.87501.8760 1.87481.8739 .0002.0021 2.000 2.00002.0010 1.99981.9989 .0002.0021 2.250 2.25002.2511 2.24982.2488 .0002.0023 2.500 2.50002.5011 2.49982.4988 .0002.0023 2.750 2.75002.7511 2.74982.7487 .0002.0024 3.000 3.00003.0011 2.99982.9987 .0002.0024 3.250 3.25003.2512 3.24983.2486 .0002.0026 3.500 3.50003.5012 3.49983.4985 .0002.0026 3.750 3.75003.7512 3.74983.7486 .0002.0026 4.000 4.00004.0012 3.99963.9986 .0002.0026

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