The MIL-DTL-38999 Series I connectors offer high performance in harsh environments, with up to 128 contacts housed in a durable insert. These circular connectors, featuring front and rear wall mount options, as well as jam nut receptacles, are designed for military applications. With an operating temperature range from -65°C to 200°C, they ensure reliable connectivity in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The connectors come in high-strength aluminum shells with plating options including cadmium and nickel for corrosion resistance. RoHS compliant finishes are also available. Trusted for their durability and functionality, these MIL-DTL-38999 I connectors are ideal for demanding environments where reliable performance is crucial.