MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within a sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mount types such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options like cadmium and nickel, they ensure durability and corrosion resistance. Overall, these connectors are ideal for military and industrial applications that demand high performance in harsh environments.