MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer reliable connectivity with M39029 rear release crimp contacts. These connectors, with front, rear wall mount, and jam nut receptacles, come in high-strength aluminum shells with options for different plating finishes, including RoHS-certified cadmium-free options. Suitable for military and industrial applications, they ensure durability and performance in demanding conditions.