MIL-DTL-38999 Series II connectors are designed for demanding environments, featuring up to 128 contacts in an insert. With a wide operating temperature range from -65 °C to 200 °C, they offer reliable performance in extreme conditions. These connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles, catering to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, they utilize durable M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, these connectors ensure robust connectivity. Compliant with military specification MIL-DTL-38999 II, they are ideal for applications requiring high reliability and environmental sealing.