The MIL-DTL-38999 Series II connectors are designed for rugged environments, offering reliable performance with up to 128 contacts. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C, making them suitable for various applications. Available in different mounting styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Featuring thin-walled construction and utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. With various plating options including gold, electroless nickel, and cadmium finishes, they meet stringent military specifications. The aluminum shells provide durability, while RoHS compliant options are available. Suitable for demanding environments, these connectors are ideal for aerospace, defense, and industrial applications.