9/16-12 Tap Drill Size
Use a 31/64" drill for a 9/16-12 UNC tap — .4844" (12.30 mm).
This drill gives roughly 75% thread, the standard for cut taps. For a form (roll) tap use the larger drill from the tap maker's chart.
Nearby taps
| Tap | Drill | Decimal |
|---|---|---|
| 1/2-20 UNF | 29/64 | .4531 |
| 9/16-18 UNF | 33/64 | .5156 |
Printable PDF version - Tap Drill 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.