The MIL-DTL-38999 Series I connectors feature up to 128 contacts in environmentally sealed inserts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount options, along with jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connections with sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet stringent military specifications for durability and performance. An ideal choice for applications requiring secure and durable electrical connections.