Home > LOCTITE BRASS-LOC® LOCTITE BRASS-LOC® LOCTITE Brass-Loc is a thread locker of low to medium strength. It is specifically designed to hold brass threads without leading to corrosion like other thread lockers.– 2020 Purple Speak with KC Jones Today About LOCTITE Brass-Loc More Pre-Applied LOCTITE Adhesives & SealantsLOCTITE Dri-Loc®| LOCTITE Vibra-Seal® | LOCTITE Dri-Seal®