50 Ohm BNC Bulkhead Jack, 1 GHz, 5000 Cycles
The BNC-FBR(41): It carries a 1 GHz maximum frequency rating and is specified for 5000 mating cycles, making it a fit for test equipment, instrumentation, and RF interconnect applications where frequent connect-disconnect is expected.
The dielectric is polyphenylene oxide (PPO). The fastening type is a bayonet lock, standard for BNC. The mounting feature is bulkhead, rear side nut, which means the connector installs from the front of the panel and is secured from the rear.