The Molex 1727040074 is a 9-position D-sub plug from the FCT 172704 series, with male pins arranged in two rows. It is a standard DB-9 form factor — shell size DE (E) — used for serial data, industrial control, and instrumentation cabling where a reliable shielded interconnect is needed.
Gold-plated brass contacts handle repeated mating cycles well, so this plug suits field-service equipment where the cable gets disconnected regularly.
This is a through-hole solder-terminated plug — the pins pass through the PCB and are wave-soldered. It mates with any standard D-sub receptacle, female socket side, with the same shell size. The unthreaded housing flange accepts standard D-sub hardware (screw-lock or slide-lock) for vibration-resistant mating. The grounding indents in the shell engage with the receptacle's grounding springs to shunt EMI before it couples to the signal pins.