The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering reliable performance in extreme conditions with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they meet stringent military specifications. These connectors, made with aluminum shells and plated with options such as electroless nickel and cadmium finishes, ensure durability and resistance to environmental factors. With M39029 rear release crimp contacts and gold plating, they guarantee secure and efficient electrical connections. Suitable for applications requiring EMI/RFI shielding, the Series II connectors are ideal for aerospace, defense, and other industries where reliability is paramount.