The 99 5109 15 04 is a 4-contact 250V/6A shielded straight miniature male Circular Connector with silver-plated brass contacts, PBT (UL94V-0) contact body and nickel-plated brass housing. The 423 series plug with M16 screw locking system, solder termination, cable mounting style. It accepts 20AWG (0.75mm2) wire, 4 to 6mm cable outlet.