G1/2 vs G1/4: specs compared
Updated 05 September 2026.
20.955 mm
G1/2 wins on major diameter
On major diameter, G1/2 leads: 20.955 mm versus 13.157 mm.
| Spec | G1/2 | G1/4 |
|---|---|---|
| Designation | G1/2 | G1/4 |
| Major diameter | 20.955 mm | 13.157 mm |
| Threads per inch / pitch | 14 | 19 |
| Thread form | parallel, 55 degree | parallel, 55 degree |
| Seals on | flat washer | flat washer or bonded seal on the face |
Questions and answers
Which has the higher major diameter, G1/2 or G1/4?
On major diameter, G1/2 leads: 20.955 mm versus 13.157 mm.
How do G1/2 and G1/4 compare?
On major diameter, G1/2 leads: 20.955 mm versus 13.157 mm.