MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range 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 offer versatility for different applications. The plugs, offered in straight, RFI grounding, and standard configurations with a 90-degree cable clamp, come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and multiple plating options such as cadmium and nickel, they ensure durability and reliability. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, guaranteeing performance in demanding conditions.