A ring split at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate, which maintains the washer hard against the substrate and the bolt thread hard against the nut or substrate thread, creating more friction and resistance to rotation. Srons Engineers are the largest manufacturers, suppliers and exporters of all types of Spring Washers Spring Lock Washers DIN 127 Spring Washers in India.
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