MIL-DTL-38999 Series I connectors feature up to 128 contacts sealed for harsh environments with a wide operating temperature range from -65 °C to 200 °C. The family includes front and rear wall mount as well as jam nut receptacles, offering versatility in applications. With 9 shell sizes and 52 insert arrangements, they accommodate various contact types, including M39029 rear release crimp contacts. Constructed with high strength aluminum shells and available in different plating options such as cadmium and nickel, these connectors ensure reliable performance. RoHS compliant finishes are also available. Ideal for military and industrial use, they meet stringent standards for durability and connectivity.