The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation requirements. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connectivity in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, they meet stringent military specifications. The connectors, with gold-plated contacts, guarantee optimal conductivity and durability. Ideal for applications demanding ruggedness and high performance, they are suitable for aerospace, defense, and industrial use. RoHS compliant options are available, ensuring environmental responsibility.