The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 I, ensure reliable performance in extreme conditions with an operating temperature range from -65°C to 200°C. They come in 9 shell sizes and 52 insert arrangements, accommodating various contact sizes including coax and twinax. Constructed with high-strength aluminum shells and available in different plating options such as electroless nickel and cadmium finishes, they offer durability and corrosion resistance. Ideal for applications requiring rugged connectivity, these MIL-DTL-38999 I connectors are suitable for aerospace, defense, and industrial use.