The TE Connectivity 5207872-1 is a jackscrew socket from the AMPLIMITE HD series — a D-sub accessory, not a connector body. It provides the threaded locking hardware for the female side of a D-sub interface, securing the mated pair against vibration and accidental disconnect. The thread size is M3.5 Socket and M3.5 Screw, and the length below head measures 0.312" (7.92 mm), which sets the panel thickness it can reach through. It is designed for use with AMPLIMITE Series HDF and HDP connectors, so if you're servicing or building a harness around those shells, this is the correct female-side screw lock.
Mating and hardware check
This is the female jackscrew socket — it accepts the male screw post from the mating connector half. The kit includes both the M3.5 socket and the M3.5 screw, so you get the complete locking pair. The 0.312" (7.92 mm) length below head determines how far the screw protrudes through the panel or connector flange; if your panel is thicker than that, the threads won't engage fully. Hardware is included in the package, so no separate sourcing for the mating screw.