Permatex® Large Diameter Threadlocker RED


OEM specified. A high strength adhesive for locking and sealing large bolts and stud 1″ (25mm+) or larger in diameter. Heat may be required to weaken bond before parts can be disassembled. Conforms to ASTM D5363 AN0211 (Mil-S-46163A, Type I, Grade L).



Suggested Applications: Frame brackets, suspension fasteners, shock absorber mounts, wheel studs.



  1. Clean and dry parts using Permatex® Surface Prep™ activator.

  2. Apply Large Diameter Threadlocker to both parts (threaded areas) and assemble.Refer to Technical Data Sheet for complete information.

NOTE: Large Diameter Threadlocker works on metal parts. It is not recommended for plastics. Cured Large Diameter Threadlocker must be heated to 500°F (260°C) before parts will separate.
US Part Number Canada Part Number Container Size Pack
27740 27740 36 ml bottle, carded 6