D38999/32W21N MIL-DTL-38999 Series III Plug Dust Cap
D38999/32W21N MIL-DTL-38999 Series III size 21 metal dust cap for plugs. Features olive drab cadmium finish and wire rope with ring. Request a quote.
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D38999/32W21N Strict Conformance and Intermateability
The D38999/32W21N is a military-standard protective cover manufactured in complete accordance with the MIL-DTL-38999 Series III specification. It is designed to cover and protect shell size 21 plug connectors. This metal dust cap delivers total physical and dimensional compatibility with matching triple-start, threaded male plugs from all qualified manufacturers, serving as a reliable hardware choice for keeping defense interconnect systems fully protected.
Key Specifications
Shell Material | Operating Temp | Mating Cycles |
|---|---|---|
Aluminum alloy | -65 °C to +200 °C | 500 |
Interface Protection and Contamination Prevention
Leaving circular plugs unmated in harsh field conditions exposes their delicate contact pins to terminal damage and environmental contamination. The D38999/32W21N acts as a solid physical barrier, sealing the mating face of the connector against airborne dust, sand, moisture, and salt spray. By keeping the pins shielded from external elements, it guarantees that the plug remains clean and ready for immediate deployment.
Heavy-Duty Shell with Advanced Plating
The body of the D38999/32W21N is precision-machined from high-strength aluminum alloy to balance structural durability with low weight. The W plating code indicates that the metal cover is finished with olive drab cadmium over an electroless nickel underplate. This specific plating provides excellent electrical conductivity, superior EMI/RFI shielding, and exceptional corrosion resistance for harsh field operations.
FAQ
Which connector series is the D38999/32W21N compatible with?
Which connector series is the D38999/32W21N compatible with?
The D38999/32W21N is specifically designed for MIL-DTL-38999 Series III circular connectors. It is built to cover shell size 21 plugs from any manufacturer that produces parts to this military standard.
What exact hardware setup does the N suffix represent?
What exact hardware setup does the N suffix represent?
The N indicates that the cover is equipped with a flexible wire rope tether and a solid attachment ring. This ring is intended to be secured to a nearby mounting point to prevent the cap from getting lost.
What protection does the W plating code offer?
What protection does the W plating code offer?
The W indicates an olive drab cadmium finish over an electroless nickel underplate. It provides up to 500 hours of salt spray resistance while maintaining an electrically conductive path for system grounding.
Does this cover fit both plugs and receptacles?
Does this cover fit both plugs and receptacles?
No. The D38999/32 series is designed specifically to protect plug connectors. If you need to protect a receptacle connector, you will need to source a matching D38999/33 series receptacle cover instead.
How can I request 3D CAD files or localized pricing for this dust cap?
How can I request 3D CAD files or localized pricing for this dust cap?
You can request complete technical specifications, 2D/3D CAD files, and bulk pricing details by directly submitting an inquiry to our customer service and technical sales team.
Certification
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