Loctite 242 Threadlocker Medium Strength 50ml

Ensure your machinery and threaded fasteners remain secure with Loctite 242 Threadlocker, the industry-standard medium-strength, blue anaerobic adhesive. Designed for general-purpose applications, this high-quality threadlocking fluid prevents loosening, leaks, and corrosion caused by shock and vibration.

Why Choose Loctite 242?

Loctite 242 is a medium-viscosity, methacrylate-based adhesive trusted by professionals for its reliability and ease of use. It is specifically formulated for fasteners that require normal disassembly using standard hand tools. Its thixotropic properties ensure that the liquid remains exactly where you apply it, preventing messy migration on your components.

• Reliable Locking: Prevents fastener loosening due to vibration and shock.
• Versatile Compatibility: Ideal for steel, brass, and stainless steel substrates.
• Controlled Application: Thixotropic formula reduces product migration.
• Easy Maintenance: Permits normal disassembly with standard hand tools.
• Quick Curing: Rapid fixture times (5–20 minutes depending on material).

Performance Specifications

• Strength: Medium
• Color: Blue
• Temperature Range: -54°C to 149°C (-65°F to 300°F)
• Viscosity: 800–1600 mPa.s (cP)
• Curing Type: Anaerobic

Frequently Asked Questions

Can I use Loctite 242 on all types of metal?

Loctite 242 is designed for use on most metals, including brass, steel, and stainless steel. It is particularly effective for less active substrates like plated surfaces. It is not generally recommended for use on plastic materials.

How do I remove fasteners treated with Loctite 242?

This threadlocker is designed for "normal disassembly." You can remove fasteners using standard hand tools. If the engagement length is excessive, you can apply localized heat up to 250°C to assist with removal while the material is hot.

Is surface preparation necessary before application?

Yes, for the best results, ensure all surfaces are thoroughly cleaned and dry. Using a Loctite cleaning solvent is recommended. If you are working with inactive metals or require a faster cure, you may apply an activator (such as 7471 or 7649) to the threads before assembly.

How should I store the product?

For optimal performance, store your Loctite 242 in a dry location at temperatures between 8°C and 21°C (46°F to 70°F). Avoid returning any unused product to the original container to prevent contamination.