MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance 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 come in aluminum shells with multiple plating options such as cadmium and nickel, ensuring durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, they provide secure and efficient connectivity. RoHS compliant finishes are also available for environmentally conscious applications. Suitable for military and industrial use, these connectors meet stringent MIL-DTL-38999 II specifications, offering high reliability in critical operations.