The 31-70020 is a 75 Ohm BNC jack-to-jack bulkhead adapter designed to create a secure feedthrough connection on a panel or enclosure. This is a non-gasketed component featuring a BNC jack interface on both ends. Key dimensions include an overall length of 1.28 inches and a hex nut size of 0.625 inches, suitable for a maximum panel thickness of 0.181 inches. It is commonly used in applications requiring a reliable 75 Ohm BNC pass-through, such as in telecommunications, broadcast systems, and test equipment.