Description

The D38999/32F21N is a military-standard protective cover engineered to shield unmated MIL-DTL-38999 Series III plug connectors from physical damage, environmental debris, and electromagnetic interference. Manufactured to rigorous aerospace and defense specifications, this shell size 21 dust cover maintains connection integrity and prevents contact deformation in mission-critical electrical systems.

Constructed from high-grade aluminum alloy, the assembly features an Electroless Nickel (Class F) conductive finish. This provides excellent corrosion resistance, fluid resistance, and robust EMI/RFI shielding continuity across wide operating temperature bands.

The integrated wire rope lanyard ensures the cap remains captive to the equipment housing, preventing loss during field operations and routine maintenance cycles.

Key Features & Technical Specifications:

• Military Part Number: D38999/32F21N

• Connector Compatibility: MIL-DTL-38999 Series III Receptacles / Plugs

• Shell Size: 21

• Cap Style: Type 32 (Protective cover for plug / receptacle mating faces)

• Material & Finish: Aluminum alloy with Class F Electroless Nickel plating (Conductive, RoHS compliant)

• Attachment Type: Stainless steel wire rope lanyard with Teflon jacket

• End Attachment: Solid loop/ring eyelet (N style) for screw mounting

• Ingress Protection: IP67 / IP68 rated seal performance when mated with internal fluorosilicone gasket

• Operating Temperature Range: -65°C to +200°C (-85°F to +392°F)

• Screening: EMI/RFI shielding continuity verified

Common Applications:

• Commercial aviation and tactical defense avionics

• Ground vehicle military harnesses

• Ruggedized industrial robotics and heavy automation systems

• Harsh marine and field telecommunications equipment