MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Engineered for harsh environments, these connectors have a wide operating temperature range of -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors feature straight, RFI grounding, and standard plugs with a 90-degree cable clamp, ensuring secure connections. With 9 shell sizes and 52 insert arrangements, they accommodate diverse contact needs, using M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options such as electroless nickel, they guarantee durability and reliability. These connectors meet MIL-DTL-38999 II military specifications and are ideal for demanding environments requiring rugged and high-performance connectivity solutions.