MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. Offering front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements, accommodating various applications. Constructed with high strength aluminum shells and available in different plating options such as gold, electroless nickel, and more, they offer durability and reliable performance. RoHS certified finishes are also available, meeting environmental standards. Perfect for military and industrial use, these connectors provide reliable connectivity in demanding conditions.