The 031-221-75RFX is a 75 ohm BNC front-mount receptacle connector designed for RF signal transmission applications. This connector features a body length of 1.05 inches (26.7 mm) and a barrel diameter of 0.500 inches (12.7 mm), with a contact depth of 0.138 inches (3.5 mm) for reliable mating. The receptacle is mounted on a panel with a mounting hole diameter of 0.475 inches (12.1 mm) and includes a ground tab for secure grounding. This connector is commonly used in RF test equipment, broadcast systems, and instrumentation where 75 ohm impedance matching and front-panel accessibility are required.