MIL-DTL-38999 Series II connectors, designed for harsh environments, feature up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors are versatile for different applications. They come in 9 shell sizes and 52 insert arrangements, with M39029 rear release crimp contacts ranging from size 22D to 12. Constructed with aluminum shells and offered in multiple plating options like electroless nickel, they ensure durability and corrosion resistance. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, providing a high level of performance and reliability.