1586040-4 is a 4-position vertical pin header assembly designed for wire-to-board connector applications in the VAL-U-LOK connector system. The header features UL 94V-0 rated white nylon housing with integrated PCB pegs for secure mounting and 0.25 mm thick copper alloy contacts with tin plating. It is designed to mate with receptacle housings and is RoHS compliant, meeting European Union Directive 2002/95/EC requirements. This connector is commonly used in industrial control systems, telecommunications equipment, and consumer electronics where reliable wire-to-board connections are required.