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 mounting options, including front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in applications. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable connectivity. Constructed with high-strength aluminum shells and offering multiple plating options, such as gold and electroless nickel, they meet stringent military specifications for durability. RoHS compliant finishes are also available, making them suitable for a wide range of industries.