MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65°C and 200°C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With options for RoHS certified finishes, including cadmium-free coatings, they meet stringent environmental standards. The connectors come in high-strength aluminum shells with plating choices like electroless nickel and olive drab cadmium, ensuring durability. Suitable for military and industrial applications, these connectors provide reliable performance in demanding settings.