MIL-DTL-38999 Series I connectors offer robust performance in harsh environments, with up to 128 contacts housed in a sealed insert. Designed for durability, they operate reliably in temperatures ranging from -65°C to 200°C. Featuring various mounting options such as front and rear wall mount receptacles, as well as jam nut receptacles, this connector family is versatile. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility in connectivity solutions. Constructed with high-strength aluminum shells and available in different plating options, including cadmium-free finishes, these connectors ensure longevity and reliability. Meeting stringent military specifications, they are suitable for a wide range of applications requiring secure and durable electrical connections in demanding environments.