NPT & NPS THREADS

·      NPT is NATIONAL PIPE TAPER (AMERICAN) – Thread form per ANSI/ASME B1.20.1

·      NPS is NATIONAL PIPE STRAIGHT (PARALLEL) – Thread form per ANSI/ASME B1.20.1 

·      NPTF is NATIONAL PIPE TAPER FOR FUEL – Thread form per SAE J476

·      NPSM is NATIONAL PIPE STRAIGHT MECHANICAL – Thread form per ANSI/ASME B1.20.1