A4 split washer
Split washer spring washers are a type of washers that are widely used in the connection of hexagon and Allen screws. Spring washers are produced according to the DIN127 metric standard and are used in sizes from 3 to 36 mm. Spring washers are produced in iron, dry, steel and different grades of stainless steel, and its material depends on the material of the connecting bolt and nut. The use of spring washers in bolt and nut connections has been made in order to increase the tension of the connection and prevents the opening of the nut on the bolt in the connection of machines that face a high level of vibration.
