MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts housed in a sealed insert. Designed for rugged applications, these connectors have a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they come in aluminum shells with options for plating, including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. Utilizing M39029 rear release crimp contacts, these connectors guarantee reliable performance, making them ideal for military and industrial use.