MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in different sizes. The high strength aluminum shells come with plating options such as iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. These connectors, including front wall mount, rear wall mount, and jam nut receptacles, are MIL-DTL-38999 I compliant, ensuring quality and reliability for military and industrial applications.