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  1. leccles

    Unified 'MOD' screw thread?

    Thanks for the prompt respsonses, everyone. Lee.
  2. leccles

    Unified 'MOD' screw thread?

    Hello all, I have a drawing that refers to a UN-2A MOD thread. Can anyone explain to me the implications of the MOD suffix? The drawing details the limits of the major, pitch and minor diameters etc. Regards, Lee

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