1/8 NPT and PT, difference???

[JasonNagra]

Is there a difference between 1/8 PT and 1/8 NPT? This may sound like a dumb question but I ASS-umed that they were the same. So, are they the same or different?? (this pretains to gauges...) Thanks, Jason.

[max240]

There are different pipe thread. most u.s. stuff is NPT but most japanese (oil pressure switches etc. ) is BSPT. they are different but very close.

[JasonNagra]

Max,
So that means I would have to get an adapter to convert 1/8 NPT to 1/8 BSPT for the gauge senders, right??

[96twofourty]

they're different pitches of threads, yes you need an adaptor

[GonadSX]

This is what I'm doing to install a mechanical AutoMeter oil pressure gauge.

http://240sx.cubicdesign.com/images/misc/fittings.jpg

[JasonNagra]

Hey thanks for that pic bro!!!