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What is an NPTF thread?
It is an ANSI standard tapered thread.
Compared to NPT, it has excellent density resistance, and it has a chevron shape that can ensure density resistance without using a sealant.
NPTF external threads can be used not only with NPTF female threads but also with NPSF and NPSI.
Thread angle: 60 degrees
0.5/16 taper per side
Compared to NPT, it has excellent density resistance, and it has a chevron shape that can ensure density resistance without using a sealant.
NPTF external threads can be used not only with NPTF female threads but also with NPSF and NPSI.
Thread angle: 60 degrees
0.5/16 taper per side
| Symbol for a screw | NPTF Thread shape |
|---|---|
| Standard Yamagata |  |
α: Female thread β: Male thread