MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various configurations, including front wall mount, rear wall mount, and jam nut receptacles, they offer reliable RFI grounding. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts and come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Perfect for military and industrial applications requiring durability and performance in demanding conditions.