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Pitch Cone

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

Pitch Cone: an imaginary cone of such apex angle and location of its vertex and axis that its surface would pass through a taper thread in such a manner as to make the axially measured widths of the thread ridge and the thread groove equal. Therefore, it is located equidistant between the sharp major and minor cones of a given thread.  On a theoretically perfect taper thread, these widths are equal to half of the basic pitch.  See also axis of thread and pitch diameter.


Original Posting: 3/20/2012
Last Revision:
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