[Tigers] oil gauge block adaptor

[Ron Fraser]

Terry

                I did some more digging and I find there is a difference in the number of threads per inch.

 

NPTF

1/8”       27 threads/ inch

¼”           18

 

BSPT

1/8”       28 threads/ inch

¼”           19

 

So these 2 systems have threads that are not totally compatible or interchangeable. 

 

I believe the tubing end of the adaptor is parallel thread.

The threads per inch is the same for either system tapered or parallel.

 

I would suggest measuring the part accurately is the only way to know for sure.

 

Ron Fraser

 

 

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