MIL-DTL-38999 Series II connectors, known for their durability and high performance, are designed for harsh environments with up to 128 contacts housed in an insert. These environmentally sealed connectors offer reliable operation in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Made of aluminum, they come with plating options including cadmium and nickel, ensuring optimal conductivity and corrosion resistance. With RoHS certified finishes, they meet environmental standards while delivering exceptional performance in military and industrial settings.