Lock Washer Split Ring Silicon Bronze Split ring lock washers are used to prevent nuts, bolts and screws from vibrating loose. Lock washers are split at a certain point and bent giving them a helical shape, creating a spring-like effect In a variety of materials, these lock washers are pressed down adding extra pressure to the nut or bolt and material. This extra pressure creates a resistance to rotation. Silicon bronze offers superior corrosion resistance and is well suited for marine, corrosive, and high heat environments