The TE Connectivity AMPLIMITE HD-20 5745076-4 is a 9-position D-sub receptacle with female sockets arranged in two rows. It is a standard-density DE-9 (E shell size) connector, the most common footprint for RS-232 serial ports, industrial I/O, and instrumentation interfaces.
Rated 6A per contact at 125V, the 5745076-4 handles signal-level and moderate power I/O — think 24 AWG to 20 AWG wiring in a harness, not bus-level current. The mating-side female screwlock (4-40) is the standard DE-9 retention method: the jack-screws on the plug side thread into these inserts to hold the pair mated against vibration and cable strain.
It mates with any standard D-sub plug that carries male pins and 4-40 threaded inserts on the plug shell. The shell layout is 1 (DE, E), so the footprint and pin spacing follow the industry-standard pitch for this shell size.