The MIL-DTL-38999 Series II connectors boast exceptional durability and versatility, designed for harsh environments with up to 128 contacts in an insert. These environmentally sealed connectors offer reliable performance in a wide temperature range from -65°C to 200°C. Featuring various mounting options including front wall, rear wall, jam nut, rear box, and front box (long grommet) receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from aluminum with multiple plating options including gold, electroless nickel, and cadmium-free finishes, these connectors ensure superior conductivity and corrosion resistance. Compliant with MIL-DTL-38999 II military specification, they guarantee high-performance in demanding applications.