What Is A 4mm Drill Bit Equivalent To?
What Is A 4mm Drill Bit Equivalent To? Drill sizes to 1′′ diameter Legend Fractional Inch Letter Drill Millimeters Number Drill Millimeters Inches Designation 3.9688mm .15625′′ 5/32′′ 3.9878mm .157′′ #22 4mm.1575′′ Are drill bits measured in mm? Fractional sizes are measured in inches, while metric sizes are measured in millimeters. The wire gauge and letter