Loctite threadlockers loctite 540498 loctite 248 is a medium strength anaerobic threadlocking material it is supplied as a wax like semi solid conveniently packaged in a self feeding stick applicator as with liquid anaerobic products this material develops its cured properties in the absence of air when confined between close fitting metal surfaces it achieves consistent strength and can be used on a variety of metal substrates loctite 248 is particularly well suited for applications wh