M6x1 Tap Drill — 5mm
The recommended tap drill for a M6x1 thread is 5mm. Thread engagement: ~75%.
Result
Answer
5mm drill bit
Standard
Thread SizeM6x1
Pitch1mm (coarse)
Tap Drill (mm)5mm
Tap Drill (fractional)13/64"
Thread Engagement~75%
For a M6x1 thread, use a 5mm drill bit (nearest fractional: 13/64"). This targets approximately 75% thread engagement, which is the standard recommendation for most applications.
Note
Reference value from published fastener data. Always verify with the fastener manufacturer for critical applications.
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About M6x1 Tap Drill
For an M6x1 thread (1mm coarse pitch), the recommended tap drill size is 5mm (nearest fractional: 13/64"). This produces approximately 75% thread engagement, which is the industry standard for most applications. Always use a sharp HSS or cobalt drill bit and proper cutting fluid when tapping.