#20 Drill Size

A #20 number drill is 0.1610" (4.089 mm).

Closest fraction: 5/32 (0.1562", under by 0.0048").

Next size down / up

Drill	Inch	mm
#21	0.1590	4.039
#19	0.1660	4.216

Printable PDF version - Drill Size Chart
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