Bison Metal Lock is a liquid anaerobic thread-locking and sealing compound designed for securing metal bolts, nuts, screws and threaded studs. It helps prevent threaded fasteners from working loose due to shock and vibration, while still allowing the connection to be dismantled later when required.

Unlike a conventional glue, Metal Lock cures when it is confined between metal surfaces and deprived of oxygen. It also seals the threaded connection and helps protect the threads against rust and corrosion.