The MIL-DTL-38999 Series II connectors offer exceptional performance in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors are designed for reliability in extreme conditions. Available in various mounting configurations such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse application needs. The connectors, compliant with military specification MIL-DTL-38999 II, boast a circular design with gold-plated, removable crimp contacts. Crafted from aluminum with options for plating finishes including electroless nickel and cadmium olive drab, they ensure durability and corrosion resistance. Suitable for M-class service rating and offering 500 mating cycles, these connectors guarantee high-performance connectivity in demanding environments.