#8-32 Tap Drill Size
Use a #29 drill for a #8-32 UNC tap — .1360" (3.45 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 |
|---|---|---|
| #6-32 UNC | #36 | .1065 |
| #10-24 UNC | #25 | .1495 |
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.