MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Constructed with aluminum shells and offered with various plating options, such as cadmium and nickel, they ensure durability and corrosion resistance. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for military and aerospace applications requiring rugged and high-performance connectivity.