This washer faced hex lock nut is available in the colours grey RAL 7001 and grey RAL 7035. The lock nut is used in addition to an existing nut on a screw or threaded rod. Its main task is to secure the first nut against vibrations or oscillations, for example, and to prevent unintentional loosening of the screw connection. The integrated washer of the combination nut provides a larger contact surface.
They are mainly, but not only used with cable glands.