Pitch Diameter, thread ridge diameter Per ASME B1.7-2006 Definitions [ back to main page ]
Pitch Diameter, thread ridge diameter: the diameter of an imaginary cylinder or cone, the surface of which would pass through the thread profiles at such points as to make the width of the thread ridge (measured parallel to the axis) equal to half of the pitch.
Original Posting: 3/20/2012
Last Revision: 9/8/2017
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