The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with options for front wall mount, rear wall mount, and jam nut receptacles. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for rugged applications. These connectors utilize M39029 rear release crimp contacts and come in various shell sizes and insert arrangements. Constructed with high-strength aluminum shells, they offer durability and reliability. Available in different plating options, including cadmium-free finishes, they meet stringent environmental standards. Ideal for military and industrial use, these connectors provide secure and efficient electrical connections in demanding conditions.