Amphenol's 031-4326 BNC connector is a miniature, lightweight RF connector developed in the late 1940s. Featuring a bayonet coupling mechanism for quick and easy mating, it's designed for use with miniature to subminiature coaxial cables. The BNC connector line is suitable for applications requiring low reflection and reliable connections, commonly found in test instrumentation, medical equipment, and telecommunications. Amphenol offers both 50Ω and 75Ω versions to meet diverse impedance matching needs, with options for military-grade (MIL-C-39012) and commercial applications. Reverse polarity versions are also available for enhanced keying and mating security.