MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts housed in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With options for straight, RFI grounding, and standard plugs, as well as multiple shell sizes and insert arrangements, they cater to diverse connectivity needs. Constructed with aluminum shells and offering plating choices like cadmium and electroless nickel, these connectors ensure durability and reliability. Suitable for military and industrial applications, they meet stringent performance standards for conductivity and environmental protection.