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You Do Not Need to Tolerance Datum Targets (#209)

(In accordance with Y14.5M-1994 standard)

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Many folks are confused because the Y14.5 standard states that datum targets may be defined by basic or directly toleranced dimensions. Where basic dimensions are used, established tooling and gaging tolerances apply. If you think about it, it really doesn’t make a lot of sense to tolerance datum targets on the part drawing. Datum targets …

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Back to Tips Tip added Jun 2007