1/8 Inch BSP
For 1/8 Inch BSP, thread standard is BSP; threads per inch (tpi) is 28; major (outside) diameter (mm) is 9.7, recorded from its source on 2026-08-12.
- Thread standard
- BSP our reading
- Nominal size
- 1/8 Inch BSP verified
- Threads per inch (TPI)
- 28 verified
- Major (outside) diameter (mm)
- 9.7 verified
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
1/8 Inch BSP | 9.7 mm | 8.9 mm | 28
— lsengineers.co.uk, retrieved 2026-08-12
Source
- lsengineers.co.ukhttps://www.lsengineers.co.uk/advice-centre/bsp-thread-sizes-explained