MIL-DTL-38999 Series I connectors boast a rugged design with up to 128 contacts, offering reliable connectivity in harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure secure installations. With an operating temperature range from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Made of high-strength aluminum, they come in 9 shell sizes and 52 insert arrangements, accommodating various needs. The connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. Available in multiple plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, they offer versatility. These connectors are ideal for military and industrial use, meeting stringent standards for performance and durability.