MIL-DTL-38999 Series II connectors feature up to 128 contacts within an environmentally sealed insert, designed for extreme operating temperatures ranging from -65 °C to 200 °C. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, these connectors guarantee secure and reliable connections in harsh environments. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they offer versatility for diverse applications. Constructed with aluminum shells and offering RoHS compliant finishes, such as electroless nickel and cadmium olive drab, these connectors ensure durability and longevity. Suitable for military and industrial use, they meet stringent MIL-DTL-38999 II standards, providing superior performance in demanding conditions.