MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with a wide operating temperature range from -65 °C to 200 °C. Available in various configurations including front and rear wall mount and jam nut receptacles, they offer reliable RFI grounding. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, catering to diverse connectivity needs. Crafted from high-strength aluminum, they come with plating options such as electroless nickel and cadmium finishes, ensuring durability in demanding applications. RoHS certified cadmium-free variants are also available, meeting environmental standards. Ideal for military and industrial use, these connectors provide secure and efficient connectivity in challenging conditions.