MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 I, ensure reliable performance in extreme conditions, with an operating temperature range from -65 °C to 200 °C. Utilizing M39029 rear release crimp contacts, they come in various sizes, including 22D, 22M, 22, 20, 16, and 8 for coax and twinax applications. The high-strength aluminum shells are available in different plating options, such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum. With RoHS-certified cadmium-free finishes, these connectors guarantee both durability and environmental compliance. Perfect for demanding military and industrial settings, they offer secure and efficient connectivity with a contact mating life of 500 cycles.