MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors have a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they include M39029 rear release crimp contacts. The high-strength aluminum shells offer durability, with plating options such as cadmium and nickel. These connectors, compliant with MIL-DTL-38999 I specifications, come in different styles like front wall mount, rear wall mount, and jam nut receptacles for versatile applications. Suitable for military and aerospace use, they ensure reliable performance in demanding conditions.