MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering reliable performance in extreme conditions. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for rugged applications. Available in various mounting options such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, ensuring secure connections. Constructed with aluminum shells and offering plating options like cadmium and nickel, they meet stringent military specifications. The connectors, with RoHS compliant finishes available, guarantee durability and performance in demanding environments.