3M 7100039222 Threadlocker TL43 Blue 50 Ml

Product Description

The 3M 7100039222 is a medium-torque, general-purpose threadlocker formulated for use on standard threaded fasteners in industrial and mechanical assemblies. Sold as the Scotch-Weld Threadlocker TL43 in blue, this 50 mL formula is oil-tolerant, meaning it cures reliably even on fasteners that carry light surface oil from handling or lubrication. Once cured, it resists vibration and shock loading while remaining removable with standard hand tools — no heat required for disassembly. Licensed HVAC technicians, plumbers, electricians, and mechanical contractors use products like this when locking fasteners on equipment panels, motor mounts, and piping hardware where future serviceability is required.

This threadlocker is suited for residential and light commercial applications where medium-strength retention is appropriate. It works on metal threaded fasteners exposed to vibration, thermal cycling, or moisture-prone environments. The oil-tolerant formulation reduces the need for solvent-cleaning fasteners before application, which speeds up workflow in the field. Its blue color designates medium-strength per industry convention, distinguishing it from permanent red or light-duty purple grades.

Key Features

• Oil-tolerant formula cures on lightly oiled fasteners without pre-cleaning
• Medium torque removal — fasteners can be disassembled with standard hand tools
• Resists vibration, shock, and corrosion once cured
• Blue color indicates medium-strength retention per industry convention
• 50 mL bottle suitable for repeated field or shop use
• General-purpose formulation compatible with a wide range of metal threaded fasteners

Compatibility

Designed for use on standard metal threaded fasteners in general-purpose mechanical and industrial assemblies where medium-strength threadlocking and hand-tool removability are required.

Installation Notes

Apply this product only to clean, dry, or lightly oiled fasteners — heavily contaminated surfaces should be wiped down before use. Ensure power is removed from any electrical equipment and that fluid systems are depressurized and isolated before working on fasteners in those assemblies. Allow adequate cure time before returning fasteners to service load. Follow the manufacturer safety data sheet for ventilation and skin-contact precautions when using anaerobic adhesives in enclosed spaces.

Technical Specifications

• Product Series: Scotch-Weld Threadlocker TL43
• Color: Blue
• Strength Grade: Medium
• Volume: 50 mL
• Weight: 0.2 pounds
• UPC: 00051115251399
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039222