MIL-DTL-38999 Series I connectors offer reliable performance in harsh environments, featuring up to 128 contacts housed in an environmentally sealed insert. With an operating temperature range spanning from -65°C to 200°C, these connectors are suitable for a wide range of applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come in multiple plating options, including cadmium-free finishes, ensuring durability and longevity. Designed for military specifications, these circular receptacles provide excellent conductivity and ingress protection, making them ideal for demanding environments.