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Standard Tolerance Chart

The following standard tolerance information is for reference purposes only and is intended to provide an indication of the types of tolerances which can be achieved with a molded part.

This chart does not represent a guarantee of the tolerances which can be achieved in all cases. In many instances, specific part geometry will affect the precision of the tolerances which can be achieved. Please contact us if you need a tolerance assessment conducted for a specific product.

Recommended Tolerances

DimensionFixed Dimension ToleranceClosure Dimension Tolerance
(in)(mm)(in)(mm)(in)(mm)
0.001 – 0.2500.0254 – 6.350±0.004±0.102±0.005±0.127
0.251 – 0.5006.375 – 12.700±0.004±0.102±0.005±0.127
0.501 – 0.62512.725 – 15.875±0.005±0.127±0.006±0.152
0.626 – 0.75015.900 – 19.050±0.006±0.152±0.008±0.203
0.751 – 1.00019.075 – 25.400±0.006±0.152±0.008±0.203
1.001 – 1.50025.425 – 38.100±0.008±0.203±0.010±0.254
1.501 – 2.00038.125 – 50.800±0.010±0.254±0.013±0.330
2.001 – 2.50050.825 – 63.500±0.010±0.254±0.013±0.330
2.501 – 3.00063.525 – 76.200±0.014±0.355±0.015±0.381
3.001 – 3.50076.225 – 88.900±0.017±0.432±0.018±0.457
3.501 – 4.00088.925 – 101.600±0.020±0.508±0.020±0.508
4.001 – 5.000101.625 – 127.000±0.025±0.635±0.025±0.635
5.001 – 7.000127.025 – 177.800±0.035±0.890±0.035±0.890
7.001 – 8.000177.825 – 203.200±0.040±1.016±0.040±1.016
8.001 – 9.000203.225 – 228.600±0.045±1.143±0.045±1.143
9.001 – 10.000228.625 – 254.000±0.050±1.270±0.050±1.270
10.001 – 11.000254.025 – 279.400±0.055±1.397±0.055±1.397
11.001 – 13.000279.425 – 330.200±0.065±1.651±0.065±1.651
13.001 – 14.000330.225 – 355.600±0.075±1.905±0.075±1.905
14.001 – 15.000355.625 – 381.000±0.090±2.286±0.090±2.286