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Thread: Minor diameter true?

  1. #1
    Associate Engineer
    Join Date
    Feb 2014
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    Question Minor diameter true?

    I have a drawing that is calling out a true position of .010 to two datums below the true position callout is the statement "minor diameter true" is this implying that the minor diameter must meet the true position callout as well as the pitch diameter?

  2. #2
    Administrator Kelly Bramble's Avatar
    Join Date
    Feb 2011
    Location
    Bold Springs, GA
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    2,327
    No, this specifies that the dimensional measurements and conformance are only required at the minor diameter.

    By default, tolerances of location, orientation or datum origin apply at the axis as derived from the pitch circle unless otherwise specified.
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

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