The 5227222-1: Rated for 500 mating cycles, so it holds up on a panel that gets reconnected regularly.
The shield termination is solder, same as the centre contact. That means you solder the braid and centre conductor to the respective posts, not crimp.
Cable Compatibility and Mating
The 50 Ohm impedance means it pairs correctly with 50 Ohm BNC plugs and cables; a 75 Ohm BNC plug will physically mate but the impedance mismatch will cause a reflection at the interface. The body finish is nickel over zinc, which gives a consistent ground path through the shell.
