MIL-DTL-38999 Series I connectors offer up to 128 contacts contained in an insert, providing environmentally sealed connectivity for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, these connectors meet military specification MIL-DTL-38999 I. With a wide range of shell sizes and insert arrangements, they accommodate various contact sizes and types, including M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and available in different plating options, such as cadmium and nickel finishes, these connectors ensure durability and reliability. Operating in temperatures ranging from -65°C to 200°C, they are suitable for critical applications. RoHS-certified options are also available, meeting environmental compliance standards.