MIL-DTL-38999 Series II connectors boast up to 128 contacts within an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installations. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connectivity. Crafted from aluminum with plating options including cadmium and nickel, they ensure durability and longevity. With RoHS certified finishes, they meet environmental standards while providing optimal performance in military and industrial applications.