MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in a single insert. These connectors provide reliable performance across a wide temperature range from -65°C to 200°C. Featuring various mounting options including front wall, rear wall, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring secure connections. Constructed with aluminum shells and offering multiple plating options, such as cadmium and electroless nickel, they meet stringent military specifications. With a rugged design and RoHS compliant finishes, they are ideal for applications requiring durability and reliability in harsh environments.