P Drill Size

A P letter drill is 0.3230" (8.204 mm).

Closest fraction: 21/64 (0.3281", over by 0.0051").

Next size down / up

Drill	Inch	mm
O	0.3160	8.026
21/64	0.3281	8.334

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