Class I - Loose Fit Tolerance Chart for Holes and Bolts

Tolerances, Engineering Design & Limits & Fits

Related Resources:

Shaft - Hole Class Grade Tolerance Table
Class II Free Fit Tolerance Chart Table
Class III Medium Fit Tolerance Table Chart
Class IV Transition Tolerance Chart Table
Class V Locational Interference Tolerance Table Chart

Class I - Loose Fit Tolerance Chart for Holes and Bolts per McDonald Douglas Design Guide "Machining Tolerances".

Units given in inches

Loose running or sliding fits / tolerances are intended for use where wide commercial tolerances may be necessary, together with an allowance, on the external member.

Class I - Loose Fit Tolerance Chart for Holes and Bolts

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