MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts and a wide operating temperature range of -65 °C to 200 °C. These environmentally sealed connectors offer various mounting options, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Constructed from aluminum with plating options such as cadmium and nickel, these connectors ensure durability and performance. Ideal for military and industrial applications, they meet stringent MIL-DTL-38999 II specifications, guaranteeing quality and reliability.