3M 7100064043 Threadlocker TL42 Purple 1 Ml

Product Description

The 3M 7100064043 is a general-purpose, medium-torque threadlocker supplied in a 1 mL single-use format. Sold under the Scotch-Weld Threadlocker TL42 product line, this purple-grade formula is designed to secure threaded fasteners against loosening caused by vibration and mechanical shock. It also provides corrosion resistance at the thread interface. Because it cures to a medium-strength bond, fasteners can be removed with standard hand tools during service — no heat or impact driver required. Technicians across HVAC, plumbing, electrical, and general mechanical trades use this type of threadlocker during assembly and repair work where periodic disassembly is expected.

This threadlocker is suited for residential and commercial maintenance applications where small-diameter fasteners need reliable retention without permanent bonding. The 1 mL size is practical for single-fastener use or small batch jobs on the service truck. It applies to metal threaded assemblies including machine screws, bolts, and studs where vibration-induced loosening is a concern. The purple color coding indicates a low-to-medium strength, hand-removable grade consistent with industry convention for general-purpose threadlocking compounds.

Key Features

• Medium torque, hand-tool removable cure — no heat needed for disassembly
• Resists vibration and mechanical shock at the thread interface
• Provides corrosion protection between mating metal threads
• Purple formula indicates general-purpose, medium-strength grade
• 1 mL single-use size minimizes waste on small jobs

Compatibility

Designed as a general-purpose threadlocker for metal threaded fasteners in residential and commercial mechanical assemblies where medium-strength, hand-removable retention is required.

Installation Notes

Apply to clean, dry, oil-free threads before assembly. Mechanical and HVAC technicians should ensure both mating surfaces are free of debris and old adhesive residue prior to application. Allow adequate cure time before placing the assembly under load. Follow the fastener manufacturer torque specifications and applicable service codes for the equipment being serviced.

Technical Specifications

• Strength Grade: Medium torque, hand-tool removable
• Color: Purple
• Volume: 1 mL
• Weight: 0.01 pounds
• Unit of Measure: Each
• UPC: 00048011626048

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100064043