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15MM Tap......Drill Size

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  • mikey553
    replied
    It is easy. 15-1=14 mm. This is your hole size for tapping. It goes the same way for all metric threads. OD-pitch=hole size.

    Mike

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  • JoeLee
    started a topic 15MM Tap......Drill Size

    15MM Tap......Drill Size

    I have 15MM 1.0 tap for a special job. I can't find a chart anywhere that gives the drill size. Every chart I've found goes from 14MM to 16MM. Why do they all skip 15MM ??

    JL.................
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