MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. With various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they ensure durability and reliable performance. The connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military and aerospace applications, providing a secure and high-performance electrical connection solution.