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Spring lock washers, also known as helical spring lock washers or split washers, are rings split and bent into a helical shape. They exert spring force between the fastener head and the secured material as the fastener is tightened. This action securely locks the fastener in position and prevents loosening during shocks or vibrations. Split washers are used in various industries such as automotive, aircraft, manufacturing, as well as household appliances.

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