Nord-Lock lock washers offer a superior securing system that provides safe locking even when exposed to severe vibration and dynamic loads.
For each inner diameter size, choose from small or large outer diameters for maximum surface contact.
How the Nord-Lock works…
Each Nord-Lock lock washer is composed of a pair of serrated halves.
Because the angle (“α”) of the Nord-Lock’s serrations is greater than the angle of the thread pitch (“β”) of the bolt, when the bolt attempts to loosen, the Nord-Lock jams relative to the pitch of the thread, securing the entire assembly.