G1-1/4 vs 1/16-27 NPT: specs compared
Updated 05 September 2026.
41.91 mm
G1-1/4 wins on major diameter
On major diameter, G1-1/4 leads: 41.91 mm versus 7.94 mm.
| Spec | G1-1/4 | 1/16-27 NPT |
|---|---|---|
| Designation | G1-1/4 | 1/16-27 NPT |
| Major diameter | 41.91 mm | 7.94 mm |
| Threads per inch / pitch | 11 | 27 |
| Thread form | parallel, 55 degree | tapered, 60 degree |
| Seals on | flat washer or bonded seal on the face | on the thread flanks with PTFE tape |
Questions and answers
Which has the higher major diameter, G1-1/4 or 1/16-27 NPT?
On major diameter, G1-1/4 leads: 41.91 mm versus 7.94 mm.
How do G1-1/4 and 1/16-27 NPT compare?
On major diameter, G1-1/4 leads: 41.91 mm versus 7.94 mm.