M6×1.0 tap drill size
Use a 5.0mm drill (5.00 mm) for a M6×1.0 cutting tap at 75% thread.
| Tap type | Drill | Decimal (mm) |
|---|---|---|
| Cutting tap, 75% thread | 5.0mm | 5.00 |
| Cutting tap, 50% thread (hard material) | 5.4mm | 5.40 |
| Roll / form tap, 65% thread | 5.55 mm | 5.55 |
| Helicoil / STI insert (M6×1.0×1D) | 6.7mm | 6.70 |
- Pitch
- 1 mm
- Major Ø
- 6.00
- Pitch Ø
- 5.35
- Minor Ø
- 4.92
M6×1.0 tapping speeds and feeds
Feed = pitch (1 mm per rev). Starting points for a general-purpose HSS cut tap:
- Aluminum 6061 / 7075: 1,130 RPM · 1130 mm/min
- Free-machining / mild steel: 320 RPM · 320 mm/min
- 304 / 316 stainless: 160 RPM · 160 mm/min
M6×1.0 tap speeds and feeds: all materials, form taps and G84 code · 5.0mm drill size and speeds
Common questions
- What size drill for a M6×1.0 tap?
- Use a 5.0mm drill (5.00 mm) for a M6×1.0 cutting tap at 75% thread.
- What drill for a M6×1.0 roll (form) tap?
- About 5.56 mm; the nearest standard drill is 5.55 mm. Check your tap maker's table.
- What drill for a M6×1.0 Helicoil?
- Drill 6.7mm (6.70 mm), then tap with the M6×1.0 STI tap.
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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