Quote:
Originally Posted by DanEC
UNF threads - huh? Well, I guess they generally have screwed into the standard NPT hose nipple manifold opening or there would be a whole cottage industry built up around re-tapping out Ford intake manifolds. I will visually compare the nipple to the sending unit threads and see how they match up. But yes, they are Smith gages.
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This page says that UNF threads can only be used with other UNF threads....
McMaster-Carr