The MIL-DTL-38999 Series I connectors feature up to 128 contacts sealed for harsh environmental conditions, with a wide 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 installation. With 52 insert arrangements using M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with high-strength aluminum shells and offered in different plating options such as electroless nickel and cadmium finishes, they meet stringent military specifications for durability. Designed for applications requiring rugged performance, these connectors provide a reliable solution for demanding environments.