When the nut is tightened onto a bolt or threaded stud, the collar is compressed against the threads. The gripping grooves on the collar deform and embed into the threads, creating a strong mechanical lock that resists loosening caused by vibration or torque. These lock nuts are capable of withstanding high temperatures without compromising their locking ability, making them suitable for use in engine compartments, exhaust systems, and other high-temperature environments.
Size availability: M8, M16, M20
Finish options: Zinc, Zinc Yellow, and unplated self colour.
P type = thick, T type = thin
View our metric bolt options here
View our metric washer options here
Information about product coating options here