M7x1 tap drill size
Use a 6.00 mm drill (6.00 mm) for a M7x1 cutting tap at 75% thread.
| Tap type | Drill | Decimal (mm) |
|---|---|---|
| Cutting tap, 75% thread | 6.00 mm | 6.00 |
| Cutting tap, 50% thread (hard material) | 6.4 mm | 6.40 |
| Roll / form tap, 65% thread | 6.6 mm | 6.60 |
- Pitch
- 1 mm
- Major Ø
- 7.00
- Pitch Ø
- 6.35
- Minor Ø
- 5.92
M7x1 tapping speeds and feeds
Feed = pitch (1 mm per rev). Starting points for a general-purpose HSS cut tap:
- Aluminum 6061 / 7075: 970 RPM · 970 mm/min
- Free-machining / mild steel: 280 RPM · 280 mm/min
- 304 / 316 stainless: 140 RPM · 140 mm/min
M7x1 tap speeds and feeds: all materials, form taps and G84 code · 6.00 mm drill size and speeds
Common questions
- What size drill for a M7x1 tap?
- Use a 6.00 mm drill (6.00 mm) for a M7x1 cutting tap at 75% thread.
- What drill for a M7x1 roll (form) tap?
- About 6.56 mm; the nearest standard drill is 6.6 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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