The 112289 is a BNC panel crimp jack connector designed for use with RG-179/U 75-ohm coaxial cable in RF and signal transmission applications. The connector features a brass body with nickel finish, a phosphor bronze contact pin with gold plating, and a delrin insulator and sleeve for mechanical stability and electrical isolation. The ferrule is constructed from copper with nickel plating to ensure reliable cable termination and consistent impedance matching. This connector is commonly used in test equipment, broadcast systems, laboratory instruments, and other applications requiring secure, low-loss RF signal connections with standard BNC panel mounting.