Nord-Lock wedge-locking washers utilize tension instead of friction in order to secure bolted joints exposed to severe vibration and dynamic loads. The system cannot loosen unintentionally as it creates a wedge-effect underneath the bolt head or nut. The system comprises of a pair of wedge-lock washers with cams on one side and radial teeth on the opposite side. As the fastener attempts to loosen, the unique design of the Nord-Lock's interior wedge design causes increased tension on the fastener, stopping the unwanted rotation. Over the operational life cycle, Nord-Lock washers offer increased operational reliability and lower maintenance costs, while significantly reducing the risks of production stops, accidents and warranty claims. Nord-Lock washers offer high corrosion resistance due to their 1000 hour salt spray coating.