The MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an insert and offer secure environmental sealing. Operating between -65 °C and 200 °C, these connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. With options for straight, RFI grounding, and 90-degree cable clamp plugs, they cater to diverse connectivity needs. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable performance. Crafted in aluminum shells with plating choices like electroless nickel, cadmium olive drab, and black anodized aluminum, they meet strict military specifications. Ideal for applications requiring durability and high performance, these connectors ensure dependable electrical connections in critical environments.