Shop Floor Charts

#7 Drill Size

A #7 number drill is 0.2010" (5.105 mm).

Closest fraction: 13/64 (0.2031", over by 0.0021").

Tap drill for

1/4-20 UNC

Next size down / up

DrillInchmm
#80.19905.055
13/640.20315.159

Full drill size chart →

Printable PDF version - Drill Size Chart
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