npt thread size on a 430 fuel tank bung

deene

Member
so i have got everything done to get the tractor running but the new sediment bowl wont thread any farther than 2 threads into the tank, threads match the one taken out but now im thinking the reason the old assy is missing the top several threads is they just cranked it in without cleaning everything up.

If i can get the thread size i can buy a tap and clean it all up before ruining another sediment bowl assy, thanks for any help and i will try to get some pictures taken and figure out how to post as requested, thanks in advance for everyones help and advice.
 
More possible it is 3/8 NPTF thread. F on the end stands for fuel. They are supposed to be a dry fit. I don't know what difference there is in the thread, but NPTF taps cost a little more than NPT taps. Get one cheeep on fleabay.
 

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