MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in harsh conditions. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, these connectors ensure secure connections. The connector family includes 52 insert arrangements with M39029 rear release crimp contacts, catering to diverse application needs. Constructed with high-strength aluminum shells and offered in different plating options like cadmium and nickel, they guarantee durability and corrosion resistance. Meeting military specifications, these connectors are ideal for aerospace, defense, and industrial applications where ruggedness and reliability are paramount.