MIL-DTL-38999 Series II connectors boast high performance with up to 128 contacts in an insert, designed for harsh environments. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With operating temperatures spanning from -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Crafted from aluminum, they come in 9 shell sizes and 52 insert arrangements, accommodating different contact sizes. The connectors are available with RoHS compliant finishes, including gold plating for enhanced conductivity. Ideal for military and industrial applications, they guarantee durability and longevity with a mating life of 500 cycles.