M64x6 tap drill size
Use a 58.00 mm drill (58.00 mm) for a M64x6 cutting tap at 75% thread.
| Tap type | Drill | Decimal (mm) |
|---|---|---|
| Cutting tap, 75% thread | 58.00 mm | 58.00 |
| Cutting tap, 50% thread (hard material) | 60.0 mm | 60.00 |
| Roll / form tap, 65% thread | 60.0 mm | 60.00 |
- Pitch
- 6 mm
- Major Ø
- 64.00
- Pitch Ø
- 60.10
- Minor Ø
- 57.51
M64x6 tapping speeds and feeds
Feed = pitch (6 mm per rev). Starting points for a general-purpose HSS cut tap:
- Aluminum 6061 / 7075: 110 RPM · 660 mm/min
- Free-machining / mild steel: 30 RPM · 180 mm/min
- 304 / 316 stainless: 20 RPM · 120 mm/min
M64x6 tap speeds and feeds: all materials, form taps and G84 code
Common questions
- What size drill for a M64x6 tap?
- Use a 58.00 mm drill (58.00 mm) for a M64x6 cutting tap at 75% thread.
- What drill for a M64x6 roll (form) tap?
- About 61.35 mm; the nearest standard drill is 60.0 mm. Check your tap maker's table.
Other Metric 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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