The 770319-1 is the front component of a 5-circuit, in-line plug housing for the Universal MATE-N-LOK II connector series. It is designed for a .250 inch centerline spacing and is made from UL 94V-0 flame retardant nylon. This housing is part of a two-piece kit (with rear component 770320-1) that provides features like enclosed contacts for shock protection, positive locking, and three-point contact stabilization for precise alignment. The complete connector system is rated for up to 600V AC/DC and supports a wide wire range from 30 to 10 AWG. These high-reliability connectors are ideal for applications where repair or replacement would be difficult.