MIL-DTL-38999 Series II connectors offer exceptional performance in harsh environments with up to 128 contacts housed in a sealed insert. Operating between -65 °C and 200 °C, these connectors come in various configurations, including front/rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with aluminum shells and plated in options like electroless nickel and cadmium finishes, they meet stringent military specifications for durability and performance. With a bayonet coupling design and gold-plated contacts, these connectors ensure secure and high-quality electrical connections for diverse applications.