The 1-1337452-0: It is a female socket designed for panel mounting through a bulkhead, secured from the rear with the included lockwasher and nut. The gold-plated center contact and nickel-plated brass body give it the corrosion resistance and mating cycle life — 500 cycles — that test equipment, instrumentation, and communication gear demand. The 0.2 dB insertion loss across the band tells you the signal sees very little attenuation through the interface.
Mounting and Cable Termination
This jack mounts in a panel cutout and is held by the rear-side nut — the bulkhead flange sits on the outside, the nut tightens from behind. The lockwasher in the kit keeps the nut from backing off under vibration. Termination is solder cup: you tin the centre conductor of your coax, insert it into the cup, and solder.
The 4 GHz ceiling means this jack handles frequencies up into the low microwave range; beyond that the BNC interface itself starts to mode. The -40°C to 60°C operating range covers indoor and sheltered outdoor use but not extended high-heat environments. Gold on the centre contact gives you low and stable contact resistance over the full 500 mating cycles, which matters when the connector sees regular test-bench reconnections.