3M 7100039190 Threadlocker TL42 Blue 10 Ml Medium Strength

Product Description

The 3M 7100039190 is a medium-strength, general-purpose threadlocker sold in a 10 mL bottle. Formulated as a blue anaerobic adhesive, it locks threaded fasteners to prevent loosening caused by vibration, shock, and corrosion. Once cured, the bond is strong enough to hold under normal service conditions yet can be broken and removed with standard hand tools — no heat or specialty equipment required. Technicians across HVAC, plumbing, electrical, and general mechanical trades use this threadlocker on nuts, bolts, and screws where routine service access is expected.

This threadlocker is suited for residential and light commercial applications where fasteners need to stay put during normal operation but must remain serviceable. It is commonly applied during equipment assembly, motor mounting, panel fastening, and pipe-fitting hardware installation. The 10 mL bottle size is practical for field service kits and single-job use, minimizing waste on small fastener counts.

Key Features

• Medium torque removal rating — holds under vibration and shock while remaining hand-tool removable
• Blue color coding for quick identification as a medium-strength, serviceable threadlocker
• Protects threaded connections from corrosion and galvanic attack
• General-purpose anaerobic formula suitable for a wide range of metals and fastener sizes
• Compact 10 mL bottle sized for field service and portable tool kits

Compatibility

Designed for use on standard threaded metal fasteners in general mechanical, HVAC, plumbing, and electrical service applications where medium-strength retention and hand-tool removability are required.

Installation Notes

Applied by a licensed technician or qualified service professional. Clean and degrease both mating threads before application to ensure proper cure. Apply a small amount to the leading threads of the fastener and assemble immediately; full cure typically requires the fastener to be tightened and undisturbed. Do not apply to plastic threads or on surfaces incompatible with anaerobic adhesives without verifying material suitability first.

Technical Specifications

• Volume: 10 mL
• Strength Level: Medium
• Color: Blue
• Removal Method: Hand tool removable
• Weight: 0.05 pounds
• UPC: 00048011626055

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039190