The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65°C to 200°C, these connectors offer reliable performance in demanding conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with plating options such as cadmium and nickel, ensuring durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, they offer secure and efficient connections. Suitable for military and industrial use, these connectors meet stringent standards for performance and reliability.