High-Strength Threadlocker 271 – Permanent Thread Locking for Marine Fasteners

The High-Strength Threadlocker 271 is the go-to solution for permanently locking bolts, studs, and fasteners in demanding marine applications. This anaerobic adhesive cures in the absence of air when confined between metal threads, forming a tough, solvent-resistant bond that withstands vibration, shock, and extreme temperatures.

Designed to handle heavy-duty marine environments, this threadlocker prevents loosening on engine mounts, deck hardware, propeller shafts, and other critical assemblies. It also seals threads against corrosion and leakage, making it an essential part of any ship chandler's inventory. For removal, apply localized heat above 250 °C (480 °F) and disassemble with standard tools.

Available in a consumer-friendly bottle with precision applicator, this IMPA 81 categorized product ensures that your crew can keep equipment running safely and reliably on every voyage.

Key Features

Technical Specifications

Product TypeAnaerobic Threadlocker
AppearanceRed liquid
Viscosity2,500 – 7,000 cP
Cure Time (Functional / Full)1 hour / 24 hours (with primer)
Temperature Range-55 °C to +150 °C (-65 °F to +300 °F)
Breakaway Torque41 N·m (362 in-lb) on 3/4" steel bolts
Thread Size CapacityUp to M25 / 1 inch
Package Size50 ml bottle
Shelf Life2 years from date of manufacture
ApplicationThreaded fasteners, studs, bolts
RemovalHeat to 250 °C (480 °F) and disassemble

Frequently Asked Questions

Can this threadlocker be removed?

Yes, apply localized heat to the fastener above 250 °C (480 °F) to soften the cured seal, then disassemble while hot. Standard tools work after heating.

What sizes of fasteners does it work on?

It is suitable for bolts and studs up to 25 mm (1 in) in diameter. It is a high-strength formula for permanent assemblies.

How long does it take to cure?

With an active surface, it achieves functional strength in about 1 hour and full cure (40-80% strength) in 24 hours. For faster cure, use a primer/activator.

Is it resistant to oil and chemicals?

Yes, the cured bond is resistant to common marine fluids, including oil, gasoline, coolants, and saltwater, making it ideal for engine rooms and deck applications.

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