The MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts and a wide operating temperature range of -65 °C to 200 °C. These connectors feature various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, ensuring versatility in installation. With options for straight, RFI grounding, and standard plugs, they cater to different connectivity needs. Made of aluminum with multiple plating choices, such as electroless nickel and cadmium finishes, these connectors offer durability and corrosion resistance. Meeting military specifications, they are ideal for applications requiring reliable and secure electrical connections in harsh conditions.