MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in harsh environments. Constructed with high-strength aluminum shells and plated with options like cadmium and electroless nickel, they meet stringent military specifications for durability. Suitable for a wide range of applications, these connectors provide secure and efficient electrical connections.