4-1/2-4NH vs 3/4"-11.5NH: specs compared
Updated 05 September 2026.
146.3 mm
4-1/2-4NH wins on major diameter
On major diameter, 4-1/2-4NH leads: 146.3 mm versus 26.99 mm.
| Spec | 4-1/2-4NH | 3/4"-11.5NH |
|---|---|---|
| Designation | 4-1/2-4NH | 3/4"-11.5NH |
| Major diameter | 146.3 mm | 26.99 mm |
| Threads per inch / pitch | 4 | 11.5 |
| Thread form | straight (parallel), 60 degree | straight (parallel), 60 degree |
| Seals on | rubber gasket in the female swivel | flat washer or O-ring in the female coupling |
Questions and answers
Which has the higher major diameter, 4-1/2-4NH or 3/4"-11.5NH?
On major diameter, 4-1/2-4NH leads: 146.3 mm versus 26.99 mm.
How do 4-1/2-4NH and 3/4"-11.5NH compare?
On major diameter, 4-1/2-4NH leads: 146.3 mm versus 26.99 mm.