The MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, including front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in connectivity solutions. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with high-strength aluminum shells and offered in a range of plating options such as gold, electroless nickel, and cadmium finishes, they meet stringent military specifications. With RoHS compliant cadmium-free options available, these connectors guarantee performance and durability in demanding applications.