The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. The connector family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all utilizing M39029 rear release crimp contacts in multiple sizes. Meeting military specification MIL-DTL-38999 I, these connectors are ideal for applications requiring durability and performance.