Loctite high-strength 262 Thread Locker — Red 250 mL, permanent metal bond, -65°F to 300°F

Loctite 262 Red is a high-strength anaerobic thread locker formulated to lock and seal metal fasteners, curing in about 24 hours and withstanding temperatures from -65°F to 300°F.

Designed for permanent or hard-to-remove fastening on metal assemblies, Loctite 262 (250 mL) provides a durable bond that resists vibration, shock and most common industrial fluids. This red, high-strength adhesive fills gaps between threads, preventing loosening and leakage while delivering a shear strength of approximately 1450 psi and tensile strength near 189 psi. It's suited for heavy-duty applications where a secure, long-lasting connection is required.

How quickly does Loctite 262 cure and what affects cure time?

Cure time is typically about 24 hours for full strength, although initial handling strength can be achieved sooner depending on part size, fit, and environmental conditions. Being an anaerobic adhesive, it cures when confined between metal surfaces and in the absence of air; temperature and material porosity influence the speed of cure.

• Typical full cure: ~24 hours at room temperature
• Faster on plated or catalytic metal surfaces; slower on passive metals
• Higher temperatures accelerate cure, very cold conditions extend time

Will Loctite 262 resist heat and harsh environments?

Yes — this formulation tolerates a wide service temperature range from -65°F up to a maximum of 300°F, making it suitable for many automotive, industrial and machinery environments. The cured polymer resists vibration, many oils, lubricants and occasional exposure to fuel and solvents, though compatibility should be checked for continuous chemical immersion.

• Service temperature range: -65°F to +300°F
• Good resistance to vibration and mechanical shock
• Stable performance in common oils and lubricants; verify for specialty chemicals

Can Loctite 262 be used on all metals and what bond strength can I expect?

Loctite 262 is formulated for use on metal fasteners and mating metal substrates; it works best on steel, stainless steel and similar alloys. It achieves high shear strength (~1450 psi) and tensile strength around 189 psi when properly applied and fully cured, delivering a permanent-grade hold for critical assemblies.

• Best for metal-to-metal threaded connections
• Shear strength: approximately 1450 psi
• Tensile strength: approximately 189 psi

How should I apply and remove the product if disassembly is needed?

Application is straightforward: clean threads of oil, dirt and old adhesive, apply a moderate amount to the threads or underhead, assemble and allow to cure. Removal of a high-strength red grade typically requires heat, impact or specialized tools; disassembly procedures depend on joint design and safety practices.

• Surface prep: degrease and remove contaminants before application
• Apply to threads, assemble parts, allow anaerobic cure in confined gap
• Disassembly often needs heat or mechanical force for permanent bonds

Who is this for: Loctite 262 Red (250 mL) is intended for professionals and serious DIYers who need a permanent, high-strength locking solution for metal fasteners — for example, automotive technicians securing engine or drivetrain bolts, industrial maintenance crews fastening machinery components, and fabricators assembling heavy equipment. If you require repeatable, vibration-resistant thread locking at elevated operating temperatures, this product provides a dependable option. For removable or lower-strength needs, consider alternative Loctite grades designed for serviceable joints.