1586039-4 is a vertical pin header assembly designed for the VAL-U-LOK wire-to-wire, wire-to-board, and wire-to-panel connector system. This 4-position header features integral PCB pegs for secure mounting and is constructed from UL 94V-2 rated nylon housing in natural color with 0.25 mm thick copper alloy contacts. The header is compatible with VAL-U-LOK receptacle housings and provides reliable electrical connections with tin or 30 gold plating options. The product is RoHS compliant and suitable for applications requiring robust, keyed connector interfaces in industrial and commercial equipment where wire-to-board interconnections are needed.