The 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 are built for durability. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts. The connectors come in high-strength aluminum shells with plating options including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. Offering RoHS certified cadmium-free finishes, they are ideal for military and industrial applications requiring reliable connectivity in demanding conditions.