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 reliability in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in application. The connectors come in aluminum shells with different plating options such as cadmium and nickel, ensuring durability and corrosion resistance. With RoHS certified finishes available, they meet environmental standards. These connectors, utilizing M39029 rear release crimp contacts, are suitable for military and industrial use, guaranteeing high performance and longevity.