MIL-DTL-38999 Series I connectors feature up to 128 environmentally sealed contacts, designed for harsh environment applications. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they utilize rear release crimp contacts for secure connections. The high strength aluminum shells come in plating options including cadmium and nickel, ensuring durability. Mating is facilitated through bayonet coupling, with jam nut mounting and RFI grounding options. RoHS compliant finishes are also available, making them suitable for a wide range of industries.