MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations, including front wall mount, rear wall mount, and jam nut receptacles, they offer reliable RFI grounding. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, these connectors ensure secure connections. Constructed with high-strength aluminum shells and offering a range of plating options, such as gold and electroless nickel, they meet stringent military specifications for performance and durability. RoHS compliant finishes are also available, making them suitable for a wide range of applications requiring rugged and reliable connectivity.