NPT Threading Explained - Electricsolenoidvalves.com
https://www.electricsolenoidvalves.com/blog/npt-threading-explained/
WEBFeb 1, 2023 · Male fitting threads may be called MPT, MNPT, or NPT (M). Threads on the inside indicate it is female. Female fitting threads may be called FPT, FNPT, or NPT (F). Both NPT (male) and NPTF (female) threads have the same pitch, 60-degree angle, and flat peaks and valleys shape.
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