BSP threaded fittings are similar to NPT threaded fittings except for an important difference, the threads per inch (TPI).
Also, the angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees, instead of 60 degrees for NPT.
BSP threaded fittings are similar to NPT threaded fittings except for an important difference, the threads per inch (TPI).
Also, the angle across the flanks of threads (if you sliced the fitting in half long-ways and measured the angle from root to crest to root) is 55 degrees, instead of 60 degrees for NPT.
