The MIL-DTL-38999 Series II connectors, known for their rugged durability, boast up to 128 contacts housed within an environmentally sealed insert. Designed for harsh environments, these connectors operate flawlessly in temperatures ranging from -65 °C to 200 °C. Offering various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. With options for straight, RFI grounding, and standard plugs, each connector is meticulously crafted to ensure secure connectivity. Featuring 52 insert arrangements with M39029 rear release crimp contacts, they guarantee reliable performance in critical applications. Constructed with aluminum shells and available in different plating finishes, such as cadmium and electroless nickel, these connectors prioritize both strength and versatility. Meeting stringent military specifications, they are ideal for demanding environments where connectivity is paramount.