MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert. These connectors are environmentally sealed, ensuring reliable performance in extreme conditions with an operating temperature range from -65 °C to 200 °C. Available in various configurations, including front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, along with multiple shell sizes and insert arrangements, these connectors provide flexibility in design. Utilizing M39029 rear release crimp contacts, they ensure secure and efficient connections. Constructed with aluminum shells and offering various plating options, including cadmium-free finishes, these connectors are durable and corrosion-resistant. Suitable for military and industrial use, they meet stringent performance standards for reliability and longevity.