BNC Jack, 50 Ohm, Panel-Mount with Right-Angle Solder Tail
It's a single-port bulkhead-mount connector using a bayonet lock for quick mate and a right-angle solder termination for the PCB. This is the kind of BNC you'd spec for a test equipment front panel, a telecom line card, or a video distribution board where the cable connection needs to be flush with the chassis and the PCB trace takes a 90-degree turn at the edge.
At 4 GHz, it covers most common RF bands up through C-band satellite IF and 5G sub-6 GHz; if your signal goes above 4 GHz, you need a different interface like SMA or N-type. The 500 mating cycles rating is solid for a panel-mount BNC — it'll survive daily test connections or field reconnects for years before the gold plating on the center contact starts to show wear. The 500 V rating is a signal-level isolation spec, not a power rating; this connector carries RF signals, not bus current.
The right-angle solder tail and shield termination are solder. The bayonet lock provides a fast quarter-turn mate.