Two rows of female sockets terminate via vertical through-hole solder tails, with a DE (E) shell size that matches the standard 9-position D-Sub footprint. The mating-side female screwlock (4-40) provides threaded retention — a splice that stays mated under vibration where a friction-only latch would walk apart over time.
The female screwlock (4-40) on the mating side accepts the male plug's threaded insert; torque the screwlock to spec and the pair holds against road buzz or cabinet vibration. No secondary lock is present — the screwlock is the primary retention, and it does the job when tightened. Termination is through-hole solder — the vertical pins insert into plated holes on the PCB and are wave-soldered. No crimp tool or press-fit hardware is needed; the board layout engineer confirms the 0.318-inch row spacing and 0.090-inch pin-to-pin pitch from the standard D-Sub footprint. The solder joint is the termination point, so inspect the fillet on the first article.