MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert for high-density applications. These connectors offer reliable performance in extreme conditions, with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they come in front wall mount, rear wall mount, and jam nut receptacle options. The connectors use M39029 rear release crimp contacts, ensuring secure connections. Constructed with high-strength aluminum shells, they are offered in plating options such as electroless nickel and cadmium finishes. RoHS certified cadmium-free versions are also available, meeting environmental standards. Ideal for military and aerospace applications, these connectors provide durable, high-quality connectivity solutions.