3/4-14NPSH vs 3/4-14 NPT: specs compared
Updated 05 September 2026.
26.67 mm
3/4-14 NPT wins on major diameter
On major diameter, 3/4-14 NPT leads: 26.67 mm versus 26.29 mm.
| Spec | 3/4-14NPSH | 3/4-14 NPT |
|---|---|---|
| Designation | 3/4-14NPSH | 3/4-14 NPT |
| Major diameter | 26.29 mm | 26.67 mm |
| Threads per inch / pitch | 14 | 14 |
| Thread form | straight (parallel), 60 degree | tapered, 60 degree |
| Seals on | flat washer or gasket in the coupling | on the thread flanks with PTFE tape |
Questions and answers
Which has the higher major diameter, 3/4-14NPSH or 3/4-14 NPT?
On major diameter, 3/4-14 NPT leads: 26.67 mm versus 26.29 mm.
How do 3/4-14NPSH and 3/4-14 NPT compare?
On major diameter, 3/4-14 NPT leads: 26.67 mm versus 26.29 mm.