The MIL-DTL-38999 Series II connectors are rugged and reliable, designed for harsh environments. With up to 128 contacts, they offer high-density connectivity in a compact insert. These connectors are environmentally sealed, ensuring protection against dust, moisture, and other contaminants. Operating within a wide temperature range of -65°C to 200°C, they are suitable for use in extreme conditions. Available in various mount types such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The plugs come in straight, RFI grounding, and standard configurations, with options for 90-degree cable clamps. Featuring 9 shell sizes and 52 insert arrangements, they accommodate different contact sizes for optimal performance. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Certified for RoHS compliance, these connectors meet stringent environmental standards, making them ideal for military and industrial applications.