The Molex 1731090177 is a 15-position D-Sub plug from the FCT 173109 series, housed in a standard DA-15 shell layout. The white polybutylene terephthalate (PBT) housing and tin-plated steel shell give it a distinct visual identity on the board — useful for quick identification during harness assembly or field swap-out.
Board Locks, Grounding, and Mounting Hardware
The flange uses a 4-40 threaded insert on the board side, matching the standard jackscrew hardware for a DA-15 shell. If you are replacing a panel-mounted D-sub, confirm the jackscrew thread pitch — 4-40 is the common size for this shell layout.
As a plug with male pins, this connector mates with a standard 15-position D-Sub receptacle (female socket) sharing the same DA-15 shell size. Termination is solder-only — the machined pins are designed for through-hole soldering, not press-fit or wire-wrap. For a wire-to-board harness, you would use a mating female D-sub with solder cup or crimp terminals, depending on the receptacle variant.