ASME A112.14 pdf download Pipe Threads, 60 deg, General Purpose 4SPECIFICATIONS FOR GENERAL PURPOSE TAPERPIPE THREADS,NPT 4.1 Taper Pipe Threads, NPT NPT threads made in accordance with these specifica-tions consist of an external taper and an internal taperthread, to form the normal type of joint having generalapplication on pipe and fittings. See Fig. 3. NPT taper pipe threads are intended...