3/4
For 3/4, thread standard is BSPP; threads per inch (tpi) is 14; thread pitch (mm) is 1.814; major (outside) diameter (mm) is 26.441; minor diameter (mm) is 24.118, recorded from its source on 2026-08-12.
- Thread standard
- BSPP our reading
- Nominal size
- 3/4 verified
- Threads per inch (TPI)
- 14 verified
- Thread pitch (mm)
- 1.814 verified
- Major (outside) diameter (mm)
- 26.441 verified
- Minor diameter (mm)
- 24.118 verified
- Thread angle (degrees)
- 55 our reading
- Governing standard
- ISO 228-1 our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
BSPP G 3/4 | 3/4" | 14 | 1.814 | 26.441 | 25.279 | 24.118
— machiningdoctor.com, retrieved 2026-08-12
Source
- machiningdoctor.comhttps://www.machiningdoctor.com/charts/bsp/