Z Drill Size

A Z letter drill is 0.4130" (10.490 mm).

Closest fraction: 13/32 (0.4062", under by 0.0067").

Next size down / up

Drill	Inch	mm
13/32	0.4062	10.319
10.5 mm	0.4134	10.500

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