3M 7100039231 Threadlocker TL71 Red 50 Ml

Product Description

The 3M 7100039231 is a red, low-viscosity threadlocker designed for high-torque removal applications. Known as Scotch-Weld Threadlocker TL71, this anaerobic adhesive wicks into threaded assemblies to lock and seal fasteners against loosening from vibration and shock. It also provides corrosion protection at the thread interface. The low viscosity allows the product to penetrate existing assemblies without full disassembly. When removal is required, heat application breaks down the cure for disassembly. Each bottle contains 50 mL. This product is used by maintenance technicians, mechanical contractors, and trade professionals working with threaded fasteners in demanding environments.

Threadlocker TL71 is suited for high-strength threaded connections where permanent or semi-permanent locking is needed. Typical applications include heavy equipment fasteners, structural bolted connections, and industrial machinery subject to continuous vibration or shock loads. The red color designation indicates a high-strength formulation, appropriate for larger fasteners and assemblies where significant torque is applied during both installation and removal. Licensed professionals and maintenance technicians in HVAC, plumbing, and mechanical trades use threadlockers of this type to secure hardware in system components exposed to vibration and thermal cycling.

Key Features

• Low viscosity formula wicks into pre-assembled threaded joints
• High-torque removal rating for secure, heavy-duty locking
• Protects threads from corrosion at the fastener interface
• Resistant to vibration and shock, preventing fastener loosening
• Removable with applied heat when disassembly is required
• 50 mL bottle size suitable for field and shop use

Compatibility

Designed as a high-strength anaerobic threadlocker for use on metal threaded fasteners in mechanical, industrial, and trade applications. No specific compatible model numbers were provided in the product data.

Installation Notes

Application is typically performed by maintenance technicians or mechanical contractors familiar with adhesive threadlocking compounds. Threads should be clean and free of oil, grease, and debris before application for proper adhesive cure. Do not apply to live electrical components or in areas with open flame during application. When removal is required, apply heat to the fastener assembly to break down the cured adhesive before attempting disassembly.

Technical Specifications

• Viscosity: Low
• Strength Level: High torque removal
• Color: Red
• Volume: 50 mL
• Weight: 0.2 pounds
• UPC: 00048011626130
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039231