Q Drill Size
A Q letter drill is 0.3320" (8.433 mm).
Closest fraction: 21/64 (0.3281", under by 0.0039").
Tap drill for
Next size down / up
| Drill | Inch | mm |
|---|---|---|
| 21/64 | 0.3281 | 8.334 |
| 8.5 mm | 0.3346 | 8.500 |
Printable PDF version - Drill Size Chart
Clean letter-size sheet for the toolbox or shop wall. Instant download, $3.49.
Clean letter-size sheet for the toolbox or shop wall. Instant download, $3.49.