MIL-DTL-38999 Series I connectors are rugged and reliable with up to 128 contacts, offering exceptional performance in harsh environments. These connectors feature front wall mount, rear wall mount, and jam nut receptacles, catering to various installation needs. With an operating temperature range of -65 °C to 200 °C, they are suitable for a wide range of applications. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells, they are built to last. Various plating options, including cadmium-free finishes, ensure corrosion resistance. These connectors are MIL-DTL-38999 I compliant, meeting stringent military specifications for quality and performance. Ideal for box mounting and back panel applications, they offer reliable connectivity in demanding environments.