MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within an insert for high-density connectivity. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles such as front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse installation requirements. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating different contact configurations. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure and efficient connections. Suitable for military and industrial applications, they meet stringent MIL-DTL-38999 II specifications for quality and performance.