R1-1/4 vs G1/16: specs compared
Updated 05 September 2026.
41.91 mm
R1-1/4 wins on major diameter
On major diameter, R1-1/4 leads: 41.91 mm versus 7.723 mm.
| Spec | R1-1/4 | G1/16 |
|---|---|---|
| Designation | R1-1/4 | G1/16 |
| Major diameter | 41.91 mm | 7.723 mm |
| Threads per inch / pitch | 11 | 28 |
| Thread form | tapered, 55 degree | parallel, 55 degree |
| Seals on | on the thread flanks with PTFE tape or paste | flat washer or bonded seal on the face |
Questions and answers
Which has the higher major diameter, R1-1/4 or G1/16?
On major diameter, R1-1/4 leads: 41.91 mm versus 7.723 mm.
How do R1-1/4 and G1/16 compare?
On major diameter, R1-1/4 leads: 41.91 mm versus 7.723 mm.