350737-1 is a 12-circuit PC board pin header designed for wire-to-board connectivity in MATE-N-LOK connector systems. This long-tail variant is specifically engineered for use with 0.125 inch (3.18 mm) thick printed circuit boards, featuring a standard A dimension of 1.050 inches (26.67 mm) and pre-tin or duplex plating options. The connector is rated UL94V-0 for flammability and is compatible with universal MATE-N-LOK II plug housings, providing reliable mating with socket contacts. The duplex finish includes 0.00030 inch minimum gold plating in the mating area with matte tin on the solder tail end over 0.00050 inch minimum nickel underplate. This product is ideal for power circuit applications in home appliances and industrial equipment requiring robust, keyed connector solutions with secure contact retention.