Position Tolerance

Microform Hole Position Tolerance Calculator

This calculator is intended to calculate the tightest GD&T position tolerance that Microform Precision can hold for a round hole given the material thickness and the number of bends crossed between datums and the hole.

Unit of Measure

Inches Millimeters

Diameter Tolerance-Over

Diameter Tolerance-Under

Material Thickness (in inches) 0.0067 (36ga)0.0075 (35ga)0.0082 (34ga)0.009 (33ga)0.0097 (32ga)0.0105 (31ga)0.012 (30ga)0.0135 (29ga)0.0149 (28ga)0.0164 (27ga)0.0179 (26ga)0.0209 (25ga)0.0239 (24ga)0.0269 (23ga)0.0299 (22ga)0.0329 (21ga)0.0359 (20ga)0.0418 (19ga)0.0478 (18ga)0.0538 (17ga)0.0598 (16ga)0.0673 (15ga)0.0747 (14ga)0.0897 (13ga)0.1046 (12ga)0.1196 (11ga)0.1345 (10ga)0.1495 (9ga)0.1644 (8ga)0.1793 (7ga)0.18750.1943 (6ga)0.2092 (5ga)0.2242 (4ga)0.2391 (3ga)0.250.31250.3750.50.6250.750.8751

Bends Between Datum A and Hole

Bends Between Datum B and Hole

Material Condition Type MMC

Tightest Achievable Position Tolerance

Ø in

The diameter tolerances allowed are sufficient to achieve the desired position without additional MMC tolerance.