12x28 tpi threads —

Founded 12x28 tpi threads models & stl files for printing
Thread gauge 2
Darrens_Workshop
Threaded Spool Hub
Creatasaurus X
Threaded Easter Egg
Desktop Makes
Water Bottle Hand Cap
peterpatchen
Reduction G12  G34
Charles Smith
Acme Threaded CClamp
JorgTheElder