Product pictures
D38999/20FJ4PN is a wall mount circular receptacle made to MIL-DTL-38999 specs. Many engineers select this connector for rugged systems, where steady power and signal links need to stand up to continuous shock and vibration.
It uses high strength alloy housing, equipped with reliable shielding to reduce EMI interference. The integrated scoop-proof shell protects contact pins. This simple design avoids bent pins when technicians plug connectors in at an angle, something we see quite often during field assembly. Its insert layout accepts mixed power and signal contacts, and it can be mounted straight onto standard panels, no extra machining required.
The solid silicone seal keeps dust and moisture away from internal contact points. It keeps electrical performance stable across a broad temperature range. All physical dimensions follow MIL-DTL-38999 requirements, so it works seamlessly with matching interchangeable connector components.
After assembly, each D38999/20FJ4PN connector goes through individual inspection. Our QC staff verify surface finish, size tolerances, sealing integrity and electrical continuity before packing. We keep molds and CKD components in stock, so we can support small sample requests and big bulk orders alike. Minor custom changes are available too, should your project need them.
If you’re reviewing D38999/20FJ4PN for your equipment design, feel free to send over your enquiry. We can provide complete datasheets, pin arrangement drawings, and arrange physical samples for your lab testing before you place bulk orders.
Exhibition
We operate a full-chain manufacturing facility focused on industrial connector production. Most components used in our finished connectors are machined and processed inside our own plant by our experienced production team.
Our in-house workshop carries out CNC turning for metal connector shells. We also have a skilled mold development team to design custom tooling. A large library of ready molds is kept on site, supporting mass production of insulators and silicone rubber accessories. All key mechanical components, including contact springs, mating interfaces and anti-interference shield springs, are manufactured within our factory.
We set up dedicated workstations for stamping and forming metal contact terminals. Every terminal is produced to comply with the M39029 international standard. In our early years of operation, many of our manufactured components were supplied to AVIC Group.
Our seasoned assembly staff perform careful checks across all production phases. They ensure every completed connector fully meets the strict requirements of the MIL-DTL-38999 specification.
