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 shell sizes and insert arrangements, they use M39029 rear release crimp contacts for reliable connectivity. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Featuring bayonet coupling and box mounting flange, they meet stringent military specifications for durability and performance. Perfect for applications requiring secure electrical connections in challenging conditions.