It's the standard DE-9 (E shell size) layout, meaning it mates with any standard 9-position D-sub plug — the pinout is the classic RS-232 / serial port arrangement, though the connector itself is signal-rated, not protocol-specific.
Rated 6A per contact at 125V — that's typical signal-level current for a standard-density D-sub. The unthreaded flange (housing/shell, no jackscrews included) means you'll need to order the 4-40 screw-lock hardware separately if vibration is a concern — hand-tight should seal it, but a half-turn loose is a dropout in a high-shake panel.