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. Available in various mounting styles such as front/rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With straight, RFI grounding, and standard plug options, as well as multiple shell sizes and insert arrangements, these connectors provide flexibility in design. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they meet rigorous standards for durability. Suitable for military and industrial use, these connectors guarantee reliable performance in demanding conditions.