The MIL-DTL-38999 Series II connectors boast up to 128 contacts in a sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various receptacle options such as front and rear wall mount, jam nut, and box mount, these connectors offer versatility in connectivity solutions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options including cadmium and nickel, they ensure durability and reliability in demanding applications. With RoHS compliant finishes, these connectors are ideal for military and industrial use, offering high performance with a service rating of E.