5-44 tap drill size
Use a #37 drill (0.1040 in) for a 5-44 cutting tap at 75% thread.
| Tap type | Drill | Decimal (in) |
|---|---|---|
| Cutting tap, 75% thread | #37 | 0.1040 |
| Cutting tap, 50% thread (hard material) | #35 | 0.1100 |
| Roll / form tap, 65% thread | #32 | 0.1160 |
- Pitch
- 0.5773 mm (44 TPI)
- Major Ø
- 0.1250
- Pitch Ø
- 0.1102
- Minor Ø
- 0.1004
Common questions
- What size drill for a 5-44 tap?
- Use a #37 drill (0.1040 in) for a 5-44 cutting tap at 75% thread.
- What drill for a 5-44 roll (form) tap?
- About 0.1150 in; the nearest standard drill is #32. Check your tap maker's table.
Other UNF sizes
Drill sizes from Machinery's Handbook and ASME B1.1/B1.13M; roll tap sizes from the form-tap formula. Tap and insert makers' tables are authoritative.
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