Threads on hoses? - Cant figure this out

purplehazenils said

Cool, thanks, forgot about that when writing this. I multiplied it out it so now it is roughly:

The threads:
-Front female-female hose ... 0.32 in. inner diameter, 0.362 in. major diameter, 25 threads per inch.

-Rear female-male hose ... female end same as above, male end has 0.362 in. inner diameter, 0.433 in. major diamater, 16 threads per inch

Click to expand...

Your front is a 3/8-24 UNF and the rear is 7/16-20 UNF.

Those are standard sizes for brake line fittings.

FYI, your thread pitch was .051 for the rear. Since we do "threads per inch" instead of pitch on our thread sizes, that is 1 divided by .051 and that rounds up to 20.

Our thread sizes go like this... 3/8-24 UNF 3/8 is the major diameter, 24 is the threads per inch (1 divided by pitch) and UNF means it's a fine thread. UNC means it's a coarse thread and you might see UNS for special threads every once in a great while.