The MIL-DTL-38999 III (D38999) harsh environment connectors feature wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs in a range of shell sizes and insert arrangements. Utilizing M39029 contacts, including sizes 22D, 20, 16, 12, 10 power, and 8 twinax, these connectors offer versatility. Available in aluminum, stainless steel, and lightweight composite shells with various plating options such as olive drab cadmium and nickel, they cater to diverse needs. With RoHS-compliant and Boeing BACC-approved designs, these connectors ensure reliable performance in demanding environments.