112553 is a BNC PC mount receptacle jack designed for printed circuit board mounting applications. This connector features a 50 ohm impedance and is constructed with a brass body with nickel finish, Teflon insulator with natural finish, and phosphor bronze contact pin with gold finish. Dimensions are specified in millimeters with tolerances ranging from ±0.2 mm for smaller dimensions to ±2.4 mm for larger dimensions. This BNC receptacle is ideal for RF and coaxial signal connections in test equipment, instrumentation, and communication systems where reliable PCB-mounted connectivity is required.