NPTF
For NPTF, region of origin is American Connections; thread type (tapered or parallel) is tapered thread; seal method is They have a tapered thread by which a seal is made by deformation of the threads, recorded from its source on 2026-08-13.
- Connection type
- NPTF verified
- Governing standard
- NPTF verified
- Region of origin
- American Connections our reading
- Thread type (tapered or parallel)
- tapered thread verified
- Seal method
- They have a tapered thread by which a seal is made by deformation of the threads. verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
NPTF (National Pipe Tapered Fuel) -style connections are widely used in fluid power systems. They have a tapered thread by which a seal is made by deformation of the threads. NPTF Threads are measured at the thread diameter and subtracting 1/4-inch to establish the nominal pipe size.
— brennaninc.com, retrieved 2026-08-13
Source
- brennaninc.comhttps://brennaninc.com/connection-types/