4-1/2-4NH vs M22 x 1.5 (14 mm): 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 22 mm.
| Spec | 4-1/2-4NH | M22 x 1.5 (14 mm) |
|---|---|---|
| Designation | 4-1/2-4NH | M22 x 1.5 (14 mm) |
| Major diameter | 146.3 mm | 22.0 mm |
| Threads per inch / pitch | 4 | 1.5 mm pitch |
| Thread form | straight (parallel), 60 degree | parallel, metric |
| Seals on | rubber gasket in the female swivel | O-ring on the 14 mm spigot |
Questions and answers
Which has the higher major diameter, 4-1/2-4NH or M22 x 1.5 (14 mm)?
On major diameter, 4-1/2-4NH leads: 146.3 mm versus 22 mm.
How do 4-1/2-4NH and M22 x 1.5 (14 mm) compare?
On major diameter, 4-1/2-4NH leads: 146.3 mm versus 22 mm.