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  1. #16
    Join Date
    Jun 2010
    Location
    Canberra
    Posts
    1,079

    Default

    I've been doing a bit with sprayer fittings lately, where you bump into the joy of not just random mixes of BSP parallel and taper threads, but the odd NPT thread, which at 1/4" is 18 instead of 19tpi

  2. #17
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    31
    Posts
    1,070

    Default

    I also discovered the other day that 19 tpi is the only common thread my lathe cannot cut. Super annoying.

  3. #18
    Join Date
    Sep 2012
    Location
    North Yorkshire UK
    Posts
    2,763

    Default

    Quote Originally Posted by nadroj View Post
    Have a care - 1/2" Whitworth is 12 TPI.
    So that's three options!
    Hi Jordan,

    Yes you are right of course I must have been distracted when I wrote that ! Thanks for the correction.
    Best Regards:
    Baron J.

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