MIL-DTL-38999 Series I connectors are designed for harsh environments, offering durability and reliability in a wide range of applications. With up to 128 contacts contained in an insert, these connectors provide secure connectivity. They are environmentally sealed, with an operating temperature range of -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they offer versatile installation options. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for easy assembly. Constructed with high strength aluminum shells and offered in various plating options, including cadmium-free finishes, they meet stringent military specifications. Suitable for demanding environments, these connectors ensure optimal performance in critical systems.