MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts sealed for protection. Operating in temperatures ranging from -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various mount types including front wall, rear wall, and jam nut receptacles, these connectors ensure secure connections. With 52 insert arrangements and M39029 rear release crimp contacts, they provide versatility for different applications. Constructed with high-strength aluminum shells and offering multiple plating options, such as electroless nickel and black anodized aluminum, these connectors prioritize durability. Suitable for military and industrial use, they meet stringent quality standards, making them ideal for critical operations.