Runout: as applied to screw threads, unless otherwise specified, this term refers to circular runout of the major and minor cylinders with respect to the pitch cylinder. Circular runout, in accordance with ASME Y14.5M, controls cumulative variations due to eccentricity and out-of-roundness. The amount of runout is usually expressed in termsof full indicator movement (FIM).
Original Posting: 3/20/2012
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