MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature ranging from -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable connectivity. Built with aluminum shells and multiple plating options, they meet stringent military specifications for durability. These connectors, with RoHS compliant finishes, are ideal for demanding environments requiring secure and high-performance electrical connections.