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. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they offer versatility with 52 insert arrangements in 9 shell sizes. Constructed with high-strength aluminum shells, they come with multiple plating options such as gold, electroless nickel, and cadmium finishes. RoHS certified options are also available, making them suitable for diverse applications requiring durability and environmental resistance.