MIL-DTL-38999 Series I connectors are rugged and reliable, ideal for harsh environments with operating temperatures ranging from -65 °C to 200 °C. Featuring up to 128 contacts in an insert, these connectors are environmentally sealed and come in various configurations including front wall mount, rear wall mount, and jam nut receptacles. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). With a high-strength aluminum shell available in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, these connectors offer versatility. RoHS certified cadmium-free finishes are also available. Designed to meet MIL-DTL-38999 I specifications, they provide reliable performance in demanding applications.