MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs for enhanced performance. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Crafted from high strength aluminum, they come in multiple plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, including RoHS certified cadmium-free finishes. Perfect for military and rugged industrial applications, they ensure reliable connectivity with their bayonet coupling and gold-plated removable crimp contacts. Trust in the MIL-DTL-38999 I connectors for efficient and durable performance in demanding environments.