MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, these connectors are designed for durability. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering multiple plating options including cadmium-free finishes, they meet stringent military specifications for performance and reliability. Ideal for use in demanding environments, these connectors ensure secure and efficient electrical connections.