Oil pressure switch thread size

[egres_svk]

Hi. Bought oil pressure meter and after troubles with M10 sized sensor and m12 thread in engine block for water temp gauge i thought that this time i will ask first. Do you know what thread size is the oil psi sensor? Thanks in advance

 

[egres_svk]

nobody? guess i will have to find out

 

[frank]

1/8 british standard pipe (tapered) ?

 

[superls]

yea 1/8th BSP as above the switch isnt tapered so guessing the hole isnt either but not 100%

 

[egres_svk]

oh, thanks

that brought me to some searching, and i think that my oil sensor is not M10, but 1/8 NPT - would make much more sense - searching for 1/8 NPT to 1/8 BSP fitting gives nice results

and because it is nearly the same thing, do you know what thread size is in the water temp hole? for me it looks like M12, but it could be 1/4 BSP (13mm in diameter). if i ordered converting fittings, i would order both, just for peace in mind