The 178964-7 is a free-hanging tab housing connector designed for the Dynamic Series D-3100D double-row standard connector family with 3.81mm pin pitch. This component features a 16-position configuration and is manufactured in black color with a key designation of X. The housing has external dimensions of 44.6 mm (dimension A), 33.6 mm (dimension B), and 17.8 mm (dimension C), providing a compact form factor suitable for industrial control applications. The connector is RoHS compliant and is commonly used in elevator control systems, junction boxes, and industrial panel applications where reliable board-to-board or wire-to-board connectivity is required.