MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, providing robust connectivity for harsh environments. 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, operate in temperatures ranging from -65 °C to 200 °C, ensuring reliable performance in extreme conditions. Constructed with high-strength aluminum shells and available in various plating options, including cadmium-free finishes, they guarantee durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, these connectors are suitable for sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax configurations. Whether for military or industrial applications, these connectors provide secure and efficient electrical connections, meeting the stringent requirements of demanding environments.