LOCTITE 222® is a low-strength, low-viscosity anaerobic threadlocker designed for small fasteners up to 6.35 mm. It cures between close-fitting metal surfaces in the absence of air, providing secure locking with easy disassembly using standard hand tools while offering resistance to shock and vibration .
LOCTITE 222® is ideal for locking and sealing small screws, adjusters, set screws and long-engagement fasteners. Its low-viscosity thixotropic formula prevents dripping, wicks easily into threads and cures over 24 hours to deliver a reliable bond that resists vibration and leakage. The product works on passive substrates such as steel, stainless steel and brass, and enables maintenance without damaging fasteners.
Colour: Purple and the product has positive UV fluorescence
Viscosity is 900–1 500 mPa·s at 20 rpm, and ≥ 3 500 mPa·s at 2.5 rpm
Breakaway torque on M10 steel bolts is 6 Nm with prevail torque near 4 Nm
Fixture time is approx. 20–25 minutes on steel; full cure requires 24 hours
Service temperature range extends from –55 °C to +150 °C
Specific gravity is approx. 1.05
It is compatible with steel, stainless steel and brass fasteners, with packaging in 10 ml and 50 ml bottles
Primary Chemistry: Methacrylate ester
LOCTITE 222® locks small fasteners while remaining removable with hand tools
Its low-viscosity formula fills gaps and prevents run-off
The cured bond resists vibration, thermal cycling and minor oil contamination
It offers reliable performance across temperatures from –55 °C to +150 °C .
This threadlocker prevents loosening and leakage of small fasteners in vibrating assemblies
It eliminates the need for mechanical locking methods such as lock washers
It allows fastener removal without heat or damage, reducing part replacement
It improves reliability in small precision assemblies by securing threaded joints
Use LOCTITE 222® for small fasteners up to 6 mm or ¼ inch diameter requiring secure locking but easy removal
It suits set screws, adjusting screws, countersunk screws, and long-engagement bolts
Effective on passive metals and when surfaces may have light oil residue
Ideal for assemblies in pumps, gearboxes, presses, instrumentation and electrical components
Assembly requires placing liquid on threads, tightening parts, and letting cure fully before service
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