BSPT: British Standard Pipe Taper -also known as R threads • BSPP: British Standard Pipe Parallel -also known as G threads Both styles have the same thread angle, shape, and pitch (threads per inch). However, BSPT threads are tapered and BSPP threads are straight (parallel). BSP threads have a 55° included angle and have rounded peaks and valleys (this is a Whitworth thread form). Here are the actual thread dimension data for BSPP and BSPT threads. The major diameter is a bit larger smaller than the actual OD of the pipe, and the minor diameter should be very close to what you would measure inside the female threaded end of a fitting. Note that the Gage Length dimension pertains only to the BSPT (tapered) thread.
Posted on: Thu, 01 Aug 2013 18:44:53 +0000
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