Loctite threadlocker 263 is the most robust performing, surface insensitive-high strength threadlocker available. A versatile, primerless, red threadlocker with excellent oil tolerance on as-received fasteners, up to 1-Inch (25 mm). Cures consistently on a variety of metals including stainless steel and most plated fasteners. Localized heating required for disassembly. The product typical applications are assembly with air tools, cylinder block bolts, ring gear bolts, transmission shaft bolts, frame brackets, suspension fasteners and much more. Invented by Henkel as a revolutionary method to positively lock and seal threaded fasteners, Loctite threadlocker adhesives are used in a wide range of applications from delicate fuel injection components to heavy-duty transmission and engine assemblies. Specified by automotive OEM's and approved for use on factory assembly lines, threadlockers work by filling the spaces between threads. The result is a secure, one-piece assembly that will not loosen under stress.