A Drill Size

A A letter drill is 0.2340" (5.944 mm).

Closest fraction: 15/64 (0.2344", over by 0.0004").

Next size down / up

Drill	Inch	mm
#1	0.2280	5.791
15/64	0.2344	5.953

Printable PDF version - Drill Size Chart
Clean letter-size sheet for the toolbox or shop wall. Instant download, $3.49.