MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various configurations including front and rear wall mount receptacles, as well as jam nut receptacles, these connectors meet military specifications for durability. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). The high strength aluminum shells come in different plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to diverse application needs. RoHS certified cadmium-free finishes are also available, making them environmentally friendly. Overall, MIL-DTL-38999 Series I connectors are ideal for mission-critical applications where reliability is paramount.