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 such as front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs for added versatility. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, including sizes 22D, 22M, 22, 20, 16, and 8 for coax and twinax applications. Constructed with high-strength aluminum shells and offering plating options like light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they ensure reliable performance in demanding environments. The connectors are RoHS compliant, providing peace of mind for environmental considerations. Perfect for military and industrial applications, these MIL-DTL-38999 I connectors deliver durability and performance in critical connectivity tasks.