Receptacle, Wall Mount Flange — MIL-DTL-38999 Series III, Shell 25

Specifications

Cross-Reference

Applications

• Avionics and flight-control harnesses requiring scoop-proof coupling
• Military ground vehicle and marine bulkhead penetrations
• High-vibration engine and actuator wiring
• EMI-shielded data and power runs on defence platforms
• Ruggedised industrial and test equipment using the MIL-DTL-38999 interface

D38999/20WJ4SN is the socket (female) build of the D38999/20WJ4 wall-mount flange receptacle: shell size 25 on insert arrangement 25-4, which carries 48 x #20 and 8 x #16 contacts. Class W is the cadmium olive drab over electroless nickel finish — the conductive, 500-hour salt-spray build that most airframe harnesses specify. Keying N is the normal polarisation; alternate keys A-D rotate the insert so adjacent connectors on the same rack cannot be cross-mated. The "20" shell style is the four-hole wall/flange mount, the standard bulkhead interface for panel-mounted receptacles. Airoadcon supplies the form-fit-function equivalent, including the cross-brand J599 build, with sample quantities for qualification testing.