The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in different plating options, including cadmium-free finishes. Whether for front wall mount, rear wall mount, or jam nut receptacles, these connectors meet rigorous military specifications for durability and performance. Perfect for applications requiring rugged and reliable electrical connections.