MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts sealed for environmental protection. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, they ensure secure installation. The connectors, compliant with MIL-DTL-38999 I specifications, come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and offering multiple plating options such as gold and electroless nickel, they provide durability and corrosion resistance. Suitable for applications requiring RoHS compliance, these connectors guarantee performance and longevity in demanding environments.