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Loctite threadlocking products prevent self-loosening and secure any threaded fastener against vibration and shock loads. Completely filling the gap between mating threads, they permanently secure threaded assemblies and eliminate fretting corrosion. Browse their full range below.
Find the right threadlocker for your application.
Low strength threadlockers are typically applied to adjustment screws, calibration screws, meters, and gauges, which undergo frequent disassembly and can be removed using hand tools.
Medium strength threadlockers are suitable for machine tools, presses, pumps, compressors, mounting bolts, and gearboxes, where disassembly occurs with normal frequency and can be done using hand tools.
High strength threadlockers are employed in more permanent assemblies such as heavy equipment, suspension bolts, motor and pump mounts, cap bolts, and studs. These applications rarely require disassembly and may require localised heat for effective removal.
A threadlocker is a liquid adhesive designed to secure fasteners from loosening between maintenance cycles. At Loctite, the threadlocker has become widely known as the “red bottle” due to its distinctive look.
When fasteners loosen, this can cause serious accidents and a total shutdown of a production plant. Threadlockers add an extra level of protection by defending against improper tightening, shocks and vibration, thermal expansion and corrosion.
Unlike conventional fastening methods such as double nuts and spring washers, Loctite threadlockers maintain clamping force, fill all gaps and provide an air-tight seal.
Loctite 2400 is a medium strength threadlocking adhesive, suitable for all metal threaded assemblies, that has been formulated to secure and seal bolts, nuts and studs to prevent loosening due to vibration. It works on all metals and passive substrates, and can tolerate slight contamination by industrial oils, corrosion prevention oils and cutting fluids.
This product carries no hazard symbols and does not contain any declarable carcinogens, mutagens or reproductive toxins.
Loctite 2700 is a high strength threadlocker designed for the permanent locking and sealing of threaded fasteners to prevent loosening due to shock and vibrations. It has been designed for applications where disassembly is not required, and cures on all metals, including passive substrates.
This product carries no hazard symbols and does not contain any declarable carcinogens, mutagens or reproductive toxins.
New trends in metal substrate composition and in anti-corrosion coatings have emerged over the past decades(s) which create challenges and opportunities for anaerobic adhesive products.
Of significance is the increased prevalence of zinc flake coated parts in the market. This paper studies the performance of a selection of Loctite Anaerobic Threadlockers on GEOMET zinc flake coated fasteners and demonstrates how this type of anti-corrosion coating differs from traditional metal substrates, and what this means for anaerobic adhesive products.
In particular, the performance of two new anaerobic threadlocking products, Loctite 2400 (medium strength) and Loctite 2700 (high strength), is examined. These new grades have excellent health and safety labelling and have been specifically designed for optimum cure on zinc flake coated fasteners.
