MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged performance in harsh environments. With an operating temperature range of -65°C to 200°C, these connectors offer reliable connectivity in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and front box mount, they cater to diverse installation needs. The aluminum shells come in different plating options such as gold, electroless nickel, and cadmium finishes, ensuring durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure and efficient connections. With a mating life of 500 cycles and RoHS compliance options, they are ideal for military and industrial applications requiring high-performance connectivity.