MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors offer versatility in installation. Constructed with high-strength aluminum shells and a range of plating options, including cadmium-free finishes, they provide durability and corrosion resistance. Trusted for military applications, these connectors meet stringent MIL-DTL-38999 I specifications for performance and reliability in demanding environments.