Description

A star washer is a type of lock washer that has teeth or tabs that bite into a bearing surface to increase locking force. They are used to prevent bolts or nuts from loosening, and to reduce vibration. How do star washers work? Internal tabs: Run along the inside diameter of the washer External tabs: Located on the outer diameter of the washer External tooth lock washers: Have teeth that bite into a larger radius, making them better suited for large screws Where are star washers used? In automotive, machinery, electrical, and construction applications For secure, long-lasting connections To lock devices and reduce vibration To allow electric current to flow between components coated by varnish or anti-corrosive agents Star washer materials Star washers can be made from a variety of materials, including metallic and non-metallic materials Metallic materials include low-carbon sheet steel, stainless steel, aluminum, brass, copper, and nickel silver Non-metallic materials include ABS, acetal, polyester, nylon, polycarbonate, fiber, polyethylene, and various NEMA grade laminates