The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in a sealed insert. With an impressive 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 cater to diverse application needs. The connectors, crafted from aluminum, come in 9 shell sizes and 52 insert arrangements, with M39029 crimp contacts ensuring secure connections. Plating options such as cadmium and nickel provide durability, while RoHS compliant finishes offer environmental responsibility. Perfect for military and industrial use, these connectors guarantee high performance and longevity in demanding settings.