British Standard Threads
British Engineering Standard Association Reports No. 21. 1985

Forms of British Standard Pipe Threads



(Parallel)
H=0.960491 x p
h=0.640327 x p
r=0.137329 x p




(Taper)
H=0.960237 x p
h=0.640327 x p
r=0.137278 x p

 




(Taper)

American Standard Threads
Approved by American Standard Association ANSI B1. 20.1 1983

Forms of American Standard Pipe Threads

* Straight Pipe Threads; the pitch, angle, and depth of thread are the same as the corresponding dimensions of the taper pipe threads

 
 
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