The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert for reliable connectivity. With an operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, these connectors ensure durability and longevity. Suitable for military and industrial use, the Series I connectors are environmentally sealed and provide excellent performance in challenging conditions.