B s p

[Paul Dutton]

Originally Posted by Richard Farrant

The real reason for using BSP for that diameter is TPI. Given the diameter, in BSW the nearest size would be about 7 tpi, in BSF it would around 9 tpi, so it makes sense to go to BSP and use a standard pipe diameter which give 14 tpi, much more sensible.

And more grip!
I use BSP (no extra ' P' required) every day on hydraulic fittings! Anything up to 2" in normal use.
JCB, BENFORD/ THWAITS, etc, hell even some Japanese stuff like kobelco and Kubota use them.
Most European stuff is metric and Americans like Jic and Orfs (O Ring Faced Seal) and NPT which is close to bsp but differs on pitch slightly!
CAT use an inverted cone fitting like jic but with a bsp thread and komatsu the same but with a metric thread!!!
Confused??
Welcome to hydraulics, and don't even get started on the FINE and LIGHT threads!!!!