MIL-DTL-38999 III (D38999) harsh environment connectors are rugged and reliable, designed for military and aerospace applications. Featuring wall mount and jam nut receptacles, as well as straight self-locking RFI plugs, these connectors offer versatile connectivity options. With 9 shell sizes and 54 insert arrangements available, they accommodate various contact sizes including 22D, 20, and 16. Constructed from durable aluminum, stainless steel, or lightweight composite materials, they ensure longevity in demanding conditions. The olive drab cadmium plating provides enhanced corrosion resistance, while RoHS-compliant and Boeing BACC-approved versions are also offered. Suitable for use in temperatures ranging from -65°C to 175°C, these connectors guarantee reliable performance in harsh operating environments.