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.
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.
