MIL-DTL-38999 Series II connectors are designed for harsh environments, offering durability and reliability. With up to 128 contacts in an insert, they provide ample connectivity options. These connectors are environmentally sealed, ensuring protection in extreme conditions, and have a wide operating temperature range from -65 °C to 200 °C. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. Featuring gold contact plating and utilizing M39029 rear release crimp contacts, they ensure excellent conductivity and are rated for 500 mating cycles. The connectors come in aluminum shells with multiple plating options, including RoHS compliant finishes. Suitable for military and industrial applications, they meet MIL-DTL-38999 II specifications and guarantee performance in demanding scenarios.