If it is metric then 1.75mm pitch would give 14.51 tpi ...could it be m12 x 1.75mm?
I've been given a used muzzle thread protector ring.
Ten mil. deep with six threads,I make that fifteen fifteen t.p.i..
Any idea what thread it has?
If it is metric then 1.75mm pitch would give 14.51 tpi ...could it be m12 x 1.75mm?
blah blah
Wouldn't be a .5" UNF by any chance ?...
Probably reading this wrong but if "half inch inside dia." then can't be half inch any thread.
5/8" BSF is 14 tpi if not mistaken and near 1/2" core dia.