D38999/20FD19PN MIL‑DTL‑38999 Series III Circular Connector

Lots of our aerospace and defense clients pick this part for field‑deployed hardware. The anti‑tilt insert really helps during assembly work. Field technicians hate mis‑aligned mating, and this design largely avoids that headache. Quick lock‑in gives stable physical connection once mated.

EMI/RFI shielding is fully built‑in. When you stack multiple signal cables inside one cabinet or airborne unit, cross‑interference becomes a real pain point. This shell’s shielding structure helps keep signal integrity steady.

Don’t overlook its environmental resistance. High‑strength vibration is nothing rare for airborne equipment or ground‑based defense units. Moisture, mould and salt‑fog often shorten connector service life out in the open. Both plug face and tail end come with sealing construction, supporting three‑proof performance against those common hazards. Compact shell brings high‑density contacts, so you can fit more signal lines within limited panel cutout space.

We have seen this model used across quite a few real‑world projects. Common use cases cover aerospace assemblies, defense communication hardware and heavy‑duty industrial automation setups.

When you place an inquiry for D38999/20FD18PN, note we can supply full sets: housing, crimp contacts and relevant accessories. M85049 series backshells and cable clamps are available to match this part too. Custom cable assemblies are workable if you send over your drawing or specs.

Sample requests are welcome for customer qualification testing. Feel free to drop us a message if you need cross‑part reference check or lead‑time confirmation.