M7x1 tap drill size

    Use a 6.00 mm drill (6.00 mm) for a M7x1 cutting tap at 75% thread.

    Drills for M7x1 (Metric)
    Tap typeDrillDecimal (mm)
    Cutting tap, 75% thread6.00 mm6.00
    Cutting tap, 50% thread (hard material)6.4 mm6.40
    Roll / form tap, 65% thread6.6 mm6.60
    Pitch
    1 mm
    Major Ø
    7.00
    Pitch Ø
    6.35
    Minor Ø
    5.92

    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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