MIL-DTL-38999 Series II connectors are meticulously engineered for rugged environments, boasting up to 128 contacts within a single insert for high-density connectivity. Designed for extreme conditions, these connectors offer unparalleled durability with an operating temperature range spanning from -65°C to 200°C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they ensure versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connections. Crafted from aluminum, they come with a choice of plating options, including cadmium-free finishes for environmental compliance. The Series II connectors, compliant with MIL-DTL-38999 standards, are essential for demanding applications in aerospace, defense, and industrial sectors.