Loctite LOC1329505 Threadlocker 243 Blue 250ml

Product Description

The LOCTITE LOC1329505 is a medium-strength, primerless anaerobic threadlocker supplied in a 250 mL bottle. Formulated as Threadlocker 243, it cures between mated metal surfaces when isolated from air, locking threaded fasteners against vibration-induced loosening without requiring a primer coat on most active metals. The blue designation indicates medium-strength hold, allowing disassembly with standard hand tools when service is required. Plumbers, HVAC technicians, electricians, and general mechanical contractors use this product on bolts, screws, and fittings where a removable but vibration-resistant thread lock is needed.

Threadlocker 243 is suited for use on steel, stainless steel, zinc dichromate, and cadmium-plated fasteners in both residential and light commercial applications. Common install scenarios include locking set screws on motor mounts, securing pipe fittings in HVAC equipment, and fastening panel hardware where periodic maintenance access is expected. The primerless formulation reduces prep time on most active metal substrates, making it practical for field service work.

Key Features

• Medium-strength formula allows disassembly with standard hand tools after cure
• Primerless application on most active metal surfaces reduces prep steps
• Anaerobic cure mechanism activates between mated metal parts in the absence of air
• Blue color coding identifies medium-strength grade at a glance
• 250 mL bottle size supports high-volume field or shop use

Compatibility

Designed as an OEM-style threadlocking compound compatible with standard threaded metal fasteners used in HVAC, plumbing, electrical, and general mechanical assemblies.

Installation Notes

Application is typically performed by licensed mechanical, HVAC, or plumbing technicians. Clean fastener threads of oil, debris, and old thread compound before applying. Apply a small bead of compound to the leading threads of the male fastener, then assemble and torque to specification per the equipment manufacturer. Allow adequate cure time before returning the assembly to service.

Technical Specifications

• Product Series: Threadlocker 243
• Strength Grade: Medium (Blue)
• Primer Required: No
• Container Size: 250 mL
• Unit of Measure: Each
• Weight: 0.601 pounds
• UPC: 0079340438989

Standard Information

• Brand: LOCTITE
• Manufacturer Part Number: LOC1329505