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Drill Charts

Use this as a reference page and extend it with your preferred fractional, letter, number and metric drill standards.

Metric Decimal Inch Nearest Fraction
3 mm 0.1181 1/8
5 mm 0.1969 13/64
6 mm 0.2362 15/64
8 mm 0.3150 5/16
10 mm 0.3937 25/64