3-6NH vs 3-8NPSH: specs compared
Updated 05 September 2026.
92.02 mm
3-6NH wins on major diameter
On major diameter, 3-6NH leads: 92.02 mm versus 88.14 mm.
| Spec | 3-6NH | 3-8NPSH |
|---|---|---|
| Designation | 3-6NH | 3-8NPSH |
| Major diameter | 92.02 mm | 88.14 mm |
| Threads per inch / pitch | 6 | 8 |
| Thread form | straight (parallel), 60 degree | straight (parallel), 60 degree |
| Seals on | rubber gasket in the female swivel | gasket in the coupling |
Questions and answers
Which has the higher major diameter, 3-6NH or 3-8NPSH?
On major diameter, 3-6NH leads: 92.02 mm versus 88.14 mm.
How do 3-6NH and 3-8NPSH compare?
On major diameter, 3-6NH leads: 92.02 mm versus 88.14 mm.