Possibly, but if so it's for use with a rod which finishes with a "female" tread.
Possibly, but if so it's for use with a rod which finishes with a "female" tread.
For instance...outers and US military rods finish female. I think only UK(PH) finish with male...well, not quite, it's a mix.
Regards, Jim
Uuum absolutely, I think this one may remain a mystery.