§ 51.1451 - Metric conversion table.
§ Metric conversion table. Inches Millimeters (mm) 8/16 12.7 7/16 11.1 6/16 9.5 5/16 7.9 4/16 6.4 3/16 4.8 2/16 3.2 6/64 2.4 5/64 2.0 1/16 1.6