MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an insert for secure connectivity. These connectors are environmentally sealed, ensuring reliability in extreme conditions with an operating temperature range from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Available in aluminum shells with a choice of plating options including cadmium-free finishes, these connectors meet stringent military specifications for durability and performance. With a range of contact sizes and types, they provide flexibility for custom configurations, making them ideal for aerospace, defense, and industrial applications requiring rugged and reliable connectivity.