3M 7100039219 Threadlocker TL43 Blue 10 Ml

Product Description

The 3M 7100039219 is a medium-strength, oil-tolerant threadlocker designed for general-purpose fastener retention in demanding service environments. Sold as a 10 mL unit of blue TL43 formula, this anaerobic adhesive cures on metal fasteners to resist vibration, shock, and corrosion without permanently locking the joint. Fasteners secured with TL43 remain removable with standard hand tools, making it a practical choice for assemblies that require periodic disassembly or field servicing. HVAC technicians, plumbers, and mechanical contractors apply this product to threaded fasteners in equipment that experiences continuous vibration or thermal cycling.

TL43 is suited for use on threaded metal fasteners in residential and light commercial mechanical systems, including equipment mounts, motor assemblies, panel hardware, and pipe bracket connections. Its oil-tolerant formulation allows application to fasteners that may carry light surface contamination from handling or machine oil, reducing the need for extensive surface prep before use. The blue color provides a visual indication of treated fasteners during inspection or maintenance.

Key Features

• Medium-strength formula allows hand-tool removal without heat or specialty equipment
• Oil-tolerant cure works on lightly contaminated metal surfaces
• Resists vibration and shock to prevent fastener loosening in service
• Provides corrosion protection at the thread interface
• Blue color identifies treated fasteners for inspection and maintenance
• 10 mL unit size suited for field kits and service calls

Compatibility

Designed as a general-purpose medium-strength threadlocker for use on standard threaded metal fasteners in mechanical, HVAC, plumbing, and light industrial applications.

Installation Notes

Apply TL43 to clean or lightly oiled metal threads before assembly. Wipe away excess after torquing the fastener to the required specification. Allow adequate cure time before placing the assembly back into service. Store away from heat sources and keep the cap sealed when not in use.

Technical Specifications

• Strength Level: Medium
• Color: Blue
• Volume: 10 mL
• Oil Tolerance: Yes
• Removability: Hand tool removable
• Weight: 0.05 pounds
• UPC: 00051115251382

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100039219