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 M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. These connectors, with front wall mount, rear wall mount, and jam nut receptacles, are RFI grounded and housed in high-strength aluminum shells. Plating options include light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, with RoHS certified cadmium-free finishes. Perfect for military and rugged applications, they ensure reliable connectivity with a mating life of 500 cycles.