It is the single-port, panel-mount member of the 227222 series, with a bayonet lock for quick connect/disconnect in test equipment, instrumentation, and telecom gear where a reliable 50 Ohm interface is needed. The nickel-plated zinc body and phosphor bronze centre contact with tin plating give it a solid 500-cycle mating life — the bayonet coupling takes the wear off the centre pin.
This jack mounts through a panel bulkhead, secured by the front-side nut and lockwasher included in the package — three pieces total: the connector body, the lockwasher, and the nut. The through-hole solder tails on the rear connect to the PCB, while the shield termination is also solder-style.
RF performance and construction
The body finish is nickel over zinc, giving reasonable corrosion resistance for indoor rack and bench use.
The base product number is 227222, so any cross-reference search should start with that root.