Loctite Threadlockers

LOCTITE® 221 is a methacrylate-based threadlocking adhesive designed for low strength applications on small threads up to a maximum size of M12. Typical fixture times are 25, 20 and 210 min on steel, brass and stainless steel respectively. Offering low viscosity and a breakaway torque of 8.5 Nm, the product is designed for fasteners that require easy disassembly with standard hand tools.

LOCTITE® 222 is a low-strength threadlocker that allows the adjustment of screws including countersunk head screws and set screws. Good on low-strength metals which could fracture during disassembly, e.g. aluminium or brass. The product works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces. t is proven to be tolerant of minor contamination due to industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids.

LOCTITE® 225 is a 1-part, brown, liquid, medium viscosity, anaerobic threadlocker which has medium strength. It cures when confined in the absence of air between close fitting metal surfaces. It is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools.

LOCTITE® 241 is a methacrylate-based threadlocking adhesive designed for medium strength applications on small threads. Typical fixture times are 35, 12 and 240 minutes on steel, brass and stainless steel respectively. Offering low viscosity and a breakaway torque of 11.5 Nm, the product is intended for fasteners that require normal disassembly with standard hand tools.

LOCTITE® 242 is a medium strength, medium viscosity, methacrylate-based threadlocking adhesive offering general purpose qualities. The product provides quick fixture times on steel, brass and stainless steel of 5, 15 and 20 min respectively. LOCTITE 242 is thixotropic to prevent migration after application and is intended for fasteners that require normal disassembly with standard hand tools.

LOCTITE® 243 is a general purpose threadlocker that provides a medium strength bond. LOCTITE 243 works on all metals, including passive substrates such as stainless steel, aluminium and plated surfaces. It is proven to be tolerant of minor contamination due to industrial oils, e.g., motor oils, corrosion prevention oils and cutting fluid.

LOCTITE® 2400 is a medium threadlocker formulated to secure and seal bolts, nuts and studs to prevent loosening due to vibration. It works on all metals and passive substrates. Slight contamination by industrial oils, corrosion prevention oils and cutting fluids is tolerated. Its key differentiator is the “White” Material Safety Data Sheet. LOCTITE 2400 carries no hazard symbols, risk or safety phrases and does not contain any declarable carcinogens, mutagens or reproductive toxins.

LOCTITE® 2431 is a blue, liquid, thixotropic, dimethacrylate ester threadlocker which has medium strength. It cures when confined in the absence of air between close fitting metal surfaces. Typical applications include pump or motor mounting bolts, engine rocker nuts or equipment housing screws.

LOCTITE® 2432 is a blue, liquid, 1-part, medium viscosity, thixotropic dimethacrylate ester acrylic threadlocker with medium strength. It is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. It was especially developed for use on sensitive metals, like titanium, used in the nuclear industry.

LOCTITE® 245 is a medium strength, medium viscosity methacrylate threadlocking adhesive formulated for large threads up to M80 in size. The product is intended for fasteners that require normal disassembly with standard hand tools (breakaway torque is 13 Nm). The product is suitable for metals that include steel, brass and stainless steel.