The 112421 is a BNC bulkhead receptacle plug connector manufactured by Amphenol RF for RF and coaxial signal applications. The connector features a threaded 3/8-32 UNEF-2A mounting interface with a 9.70 mm (0.382 inch) diameter body and includes an insulator, contact pin, lock washer, hex nut, and solder tag for secure panel mounting and electrical connection. The assembly uses brass components with nickel finish for the body, lock washer, hex nut, and solder tag, while the insulator is made of Teflon for dielectric performance. This bulkhead configuration is commonly used in RF equipment, test instrumentation, and communication systems where a flush-panel-mounted coaxial connection is required with reliable solder termination.