M22 x 1.5 (15 mm) vs M18 x 1 male: specs compared
Updated 05 September 2026.
22 mm
M22 x 1.5 (15 mm) wins on major diameter
On major diameter, M22 x 1.5 (15 mm) leads: 22 mm versus 18 mm.
| Spec | M22 x 1.5 (15 mm) | M18 x 1 male |
|---|---|---|
| Designation | M22 x 1.5 (15 mm) | M18 x 1 male |
| Major diameter | 22.0 mm | 18.0 mm |
| Threads per inch / pitch | 1.5 mm pitch | 1 mm pitch |
| Thread form | parallel, metric | fine parallel |
| Seals on | O-ring on the 15 mm spigot | washer inside the aerator housing |
Questions and answers
Which has the higher major diameter, M22 x 1.5 (15 mm) or M18 x 1 male?
On major diameter, M22 x 1.5 (15 mm) leads: 22 mm versus 18 mm.
How do M22 x 1.5 (15 mm) and M18 x 1 male compare?
On major diameter, M22 x 1.5 (15 mm) leads: 22 mm versus 18 mm.