The 1-641972-1 is a 9-circuit matrix pin header connector designed for wire-to-board power circuit applications in home appliances, particularly gas appliances. This connector features a 0.800 inch (20.32 mm) dimension with pre-tin duplex plating, combining gold plating in the mating area with matte tin on the solder tail end over nickel underplate for enhanced durability and electrical performance. The connector is housed in UL94V-0 nylon material and is designed to mate with corresponding plug housings using socket contacts. It incorporates a compact 5.0 mm power key connector design with a 19.4 mm mated height, featuring double lock plates and protective walls around locking levers to prevent wire tangling. The connector is recognized by Underwriters Laboratories (File No. E28476) and certified by Canadian Standards Association (File No. LR7189), making it suitable for demanding industrial and appliance applications requiring reliable power distribution.