G1/16 vs 1/2-14 NPT: specs compared
Updated 05 September 2026.
21.34 mm
1/2-14 NPT wins on major diameter
On major diameter, 1/2-14 NPT leads: 21.34 mm versus 7.723 mm.
| Spec | G1/16 | 1/2-14 NPT |
|---|---|---|
| Designation | G1/16 | 1/2-14 NPT |
| Major diameter | 7.723 mm | 21.34 mm |
| Threads per inch / pitch | 28 | 14 |
| 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, G1/16 or 1/2-14 NPT?
On major diameter, 1/2-14 NPT leads: 21.34 mm versus 7.723 mm.
How do G1/16 and 1/2-14 NPT compare?
On major diameter, 1/2-14 NPT leads: 21.34 mm versus 7.723 mm.