2-1586037-4 is a vertical pin header connector designed for PCB board-to-board and board-to-wire interconnections. It features 4 positions with 0.1-inch (2.54 mm) centerline spacing and tin-plated brass contacts, providing reliable electrical connections. The header is constructed with UL 94V-2 rated nylon housing in natural color and includes positioning pegs for secure PCB mounting. The connector accommodates wire gauges from 26-22 AWG with insulation ranges of 0.047–0.069 inches, and is compatible with standard receptacle housings. This vertical pin header is commonly used in consumer electronics, industrial control systems, and embedded applications where space-efficient, cost-effective interconnection solutions are required.