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  1. #1
    Join Date
    May 2011
    Murray Bridge S Aust.

    Default Tap Drill Size Calculator

    Tap drill size calculators

    Thanks to Ropetangler for this.
    To grow old is mandatory, growing up is optional.

  2. #2
    Join Date
    Oct 2006


    Pretty easy to remember, its just OD minus pitch
    Hafco AL320G Lathe
    Toolex RF31 Mill/Drill
    Saber Bandsaw

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