7/16-20 Tap Drill Size
Use a 25/64" drill for a 7/16-20 UNF tap — .3906" (9.92 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 |
|---|---|---|
| 7/16-14 UNC | U | .3680 |
| 1/2-13 UNC | 27/64 | .4219 |
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.