Spring washers, which have axial flexibility and are used to prevent fastening or loosening due to vibrations. This type of washer can be used, that supposed prevent losing and spring action and edge that digs into the screw-on the reverse. Locking washers, which prevent fastening or loosening by preventing unscrewing rotation of the fastening device.A spring washer assembly is placed under the nut to prevent the loosening of the nut.
