Apply after assembly
Sets in 20 minutes
Fully cures in 24 hours
Use On
  • Automotive
  • Threadlockers
  • And More

Perma-Lock Penetrating Threadlocker

J-B Weld Threadlockers provide a reliable and superior lock and seal for threaded fasteners. Ideal on mechanical parts, body assemblies, and hundreds of other applications to prevent loosening of fasteners from shock and vibration. The perma-lock low viscosity green thread locker penetrates between part surfaces for a secure seal with no disassembly necessary. It can be applied to pre-assembled parts and is ideal for 1/2 inch to 2 inch fasteners.

Great For
  • Carburetor adjustment screws
  • Distributor bolts
  • Preassembled nuts & Bolts
  • Set screws
Made in the USA US flag

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Prepare: Clean all threads (Bolt and Hole) with a cleaning solvent
Mix: Shake product thoroughly before use.
Assemble Parts: Tighten as usual.
Apply: Place several drops of product onto the areas where threads enter parts..