Good Morning,

What is the thread size of the male-threaded flare nut on 3/8" fuel line?

Thanks!

5/8 x18 I believe.

That would be great and make my life easier if indeed it is. Thanks.

...just returned from the local parts store with some 3/8" flare nuts and indeed they are 5/8 x 18 threaded.

Thanks!!

your very welcome sir, thank you for the confirmation.