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Straightness Per ASME B1.7-2006 Definitions [ back to main page ]

Straightness: a condition where points of a surface or axis are in a straight line.  For screw threads it refers to the variation of a thread pitch cylinder or cone axis from the theoretical straight line.  The straightness tolerance specifies a tolerance zone within which the pitch cylinder axis must lie.  Straightness may also be applied to the major cylinder and minor cylinder.


Original Posting: 3/20/2012
Last Revision:
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