It's the plug half of a standard DB-25 pair — the side that carries the pins, not the sockets. The shell is tin-plated steel with grounding indents that make shell-to-shell contact before the signal pins engage, bleeding off shield currents in electrically noisy environments. The housing ships empty, so the BOM line for this order code covers only the plastic and metal shell; the crimp terminals (part number varies by wire gauge and plating) are ordered separately.
Sizing the shell and the circuit count
This housing uses the shell size, connector layout 3 (DB, B) — 25 positions in two rows. The shell envelope is the standard DB-25 size.
Mounting and termination — what mates with what
The 5745036-2 is a free-hanging (in-line) plug. It mounts to the cable, not the panel. The cable-side 4-40 threaded insert accepts the standard D-sub jack-screw from the mating receptacle, locking the pair together against vibration. The mating half is a D-sub receptacle housing that accepts female crimp contacts — look for a TE AMPLIMITE HDP-20 receptacle with the same DB-25 shell size and a 4-40 flange. The grounding indents on this plug's shell mate with corresponding dimples on the receptacle shell, establishing a low-impedance ground path before the signal pins touch.