MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert for secure connectivity. These connectors are sealed to withstand harsh conditions, with an operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable performance. The high strength aluminum shells come in different plating options, including cadmium-free finishes for environmental compliance. Offering front wall mount, rear wall mount, and jam nut receptacles, these connectors are ideal for military and aerospace applications requiring durability and conductivity.