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, 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. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors ensure durability and compatibility. The wall-mounting flange, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, provide versatile installation options. Suitable for military and industrial applications, the MIL-DTL-38999 Series I connectors guarantee reliable connectivity in demanding environments.