F Type Receptacle, 75 Ohm, 1 GHz — Bulkhead Mount with Hardware
Rated to 1 GHz max frequency, this is the connector you'd see on a CATV drop amplifier, a satellite IF distribution panel, or a head-end patch bay where the signal path is 75 Ohm end to end.
75 Ohm Impedance — Not 50 Ohm
This is a 75 Ohm connector, not 50 Ohm. The impedance is set by the dielectric material — polypropylene (PP) in this case — and the centre conductor dimensions. If you're replacing a connector on a 75 Ohm cable run (RG-6, RG-59, or similar), this is the right match. Drop it into a 50 Ohm system and you'll get a reflection at the interface; the VSWR penalty depends on frequency, but above a few hundred MHz it's noticeable.
The 222128-11 mounts through a panel hole with the front-side nut — the lockwasher goes between the nut and the panel face to keep it tight under vibration. The right-angle tail keeps the PCB parallel to the panel face, which saves depth in a shallow enclosure.
Mating Cycles and Contact Plating
Tin is fine for a connector that gets mated once during installation and maybe a handful of times over its life — think set-top box wall plate or a satellite LNB input.