The Molex 1731091082 is a 9-position D-sub plug from the F, FCT 173109 series, built for board-mount signal interconnect in equipment that needs a shielded, lockable I/O connection. The through-hole solder termination keeps it on the board for good; there's no crimp or IDC here, so plan for a wave or hand-solder step in the build.
Grounding and Mounting — What the Shell Tells You
This plug includes grounding indents on the shell. The flange is unthreaded. There are no board locks on this part — the through-hole pins alone provide the mechanical retention to the PCB. For vibration-heavy applications, consider adding a board-lock variant or a separate mounting bracket to take the shear off the solder joints.
Mating and Compatibility — What It Plugs Into
The 9-position count matches the 2-row layout.