A Star Washer, is a type of washer with teeth or pointed edges that are designed to grip both the fastener and the surface being fastened. These teeth prevent the washer from rotating and help provide better friction and resistance to loosening due to vibrations. The star-shaped pattern improves the washer's ability to lock in place, offering enhanced security for the connection. ... Star washers are commonly used in applications where preventing loosening is crucial, such as in electrical connections, automotive, machinery, and industrial settings. Made from materials like steel, stainless steel, or copper, they offer durability and corrosion resistance.