The TE Connectivity 282133-75 is a 1.0/2.3 interface receptacle, female socket, built for 75 Ohm signal paths. The 1.0/2.3 form factor is a compact push-pull coax — smaller than a BNC, no bayonet lock, and common in telecom base stations, broadcast video routers, and test equipment where board-edge or panel-mount coax is needed. The 75 Ohm impedance tells you this is a video or broadband data line, not the 50 Ohm RF chain you'd see on an antenna port.
If your system is 75 Ohm video (SDI, composite, broadband data), this connector matches the line. If you're building a 50 Ohm RF chain, this is the wrong impedance and will cause a reflection at the junction. The 3 GHz frequency ceiling covers L-band (GPS, Iridium) and most S-band (Wi-Fi, Bluetooth, cellular backhaul) applications, plus HD-SDI video at 3 Gbps. Above 3 GHz, the 1.0/2.3 interface geometry starts to radiate and the return loss degrades.
Mounting and hardware — what's in the bag
The mounting feature is bulkhead front-side nut — you drop the connector through the panel hole from the outside, seat the lockwasher on the inside face, and tighten the nut from the rear. The board edge / end launch mounting option means the solder cup termination can also be soldered directly to a PCB trace at the board edge, though the primary use case is panel-mount coax.