The 99 0979 100 04 is a 4-contact 125V/3A unshielded straight subminiature male Circular Connector with Au (gold) plated CuZn (brass) contacts, PA (UL94V-0) contact body and PA (UL 94HB) housing. The 678 series plug with Bayonet locking system, solder termination, cable mounting style. It accepts 24AWG (0.25mm2) wire, 3 to 4mm cable outlet. The reliable and secure bayonet locking system is easy to operate and can withstand high vibrations. Housing outer diameter is only 12mm. It has a strain relief for added strength.