640900-1 is a 5-circuit vertical pin header designed for use in Universal MATE-N-LOK II wire-to-board connector systems. This standard tail pin header features pre-tin plating and is rated UL94V-0 for flammability. The header has an A dimension of 1.300 inches (33.02 mm) and is designed for use with 0.062 inch (1.57 mm) thick PC boards. It mates with plug housing part numbers 770016-1 (Universal MATE-N-LOK II) and 350809-1 (Universal MATE-N-LOK) using socket contacts. This connector is ideal for power circuit applications in home appliances, particularly gas appliances, offering reliable wire-to-board connections with a compact design.