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Thread: Callout for threaded hole to be tapped straight

  1. #1
    Associate Engineer
    Join Date
    Apr 2016

    Callout for threaded hole to be tapped straight


    I am in the process of finishing up a print that needs a callout to make sure the hols are threaded straight. The issue we are having is that the threads are not being tapped straight down and then the BSPP o-ring fitting will not sit flush on the face causing leaks.

    Do you guys know of a way to notate that the threads need to be tapped straight?

    Any help would be appreciated.

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Bold Springs, GA
    GD&T Perpendicularity tolerance relative to tap start surface...
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

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