MIL-DTL-38999 Series II connectors boast up to 128 contacts in an environmentally sealed insert, designed for extreme conditions with an operating temperature range of -65 °C to 200 °C. Offering various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors are versatile in military and industrial applications. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring reliable connections. Constructed with aluminum shells and offering plating options including cadmium and nickel, these connectors meet stringent performance standards. With RoHS-certified finishes available, they cater to diverse environmental requirements. Perfect for EMI/RFI shielding, these connectors guarantee durability and conductivity, making them ideal for demanding environments where reliability is paramount.