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 accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering multiple plating options, including cadmium-free finishes, these connectors ensure durability and corrosion resistance. The front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, provide versatility for different mounting requirements. Suitable for military and industrial applications, the MIL-DTL-38999 Series I connectors are essential for high-reliability connectivity in demanding environments.