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Don’t Give Runout More Credit Than it Deserves
(In accordance with Y14.5M-1994 standard)

PDF of this Tip

Both circular and total runout are usually economical tolerances to use when controlling the location of cylinders with respect to a datum axis. The runout controls do not, however, control the location of planes and contours even when basic dimensions are applied. Using Profile of a surface rather than runout ties the surface location to the basic dimension.

Back to Tips Tip added May 1999