MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts in an insert for versatile connectivity. These connectors offer reliable performance in extreme conditions, operating smoothly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors, available in 9 shell sizes and 52 insert arrangements, boast M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options including cadmium and nickel, they ensure durability and conductivity. With RoHS certified finishes available, these connectors are ideal for military and industrial applications requiring high-performance connectivity.