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. These connectors come in various configurations, including front wall mount, rear wall mount, and jam nut receptacles, offering RFI grounding options. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 for versatile connectivity. Constructed with high-strength aluminum shells, they offer plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, including RoHS compliant finishes. Ideal for military and aerospace applications, these MIL-DTL-38999 I connectors ensure reliable performance in demanding conditions.