MIL-DTL-38999 Series II connectors boast up to 128 contacts in an insert, providing robust connectivity in harsh environments. These environmentally sealed connectors operate flawlessly in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum with plating options including cadmium-free finishes, they ensure reliable performance. With a mating life of 500 cycles and conductivity, they are ideal for demanding applications requiring environmental resilience.