MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65°C to 200°C. Designed for harsh environments, this connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells, these connectors come with various plating options, including light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes offered. Perfect for military and industrial applications, the MIL-DTL-38999 I connectors ensure reliable performance in demanding conditions.