The purpose of this Appendix is to present formulas for determining the required positional tolerances or the required sizes of mating features to ensure that parts will assemble. The formulas are valid for all types of features or patterns of features and will give a "no interference, no clearance" fit when features are at maximum material condition with their locations in the extreme of positional tolerance. Consideration must be given for additional geometric conditions that could affect functions not accounted for in the following formulas.

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