The MIL-DTL-38999 Series II connectors are designed for demanding environments, with up to 128 contacts housed in a sealed insert. Operating between -65 °C and 200 °C, these connectors offer reliability in extreme temperatures. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in aluminum shells with plating options like cadmium and nickel, they ensure durability and corrosion resistance. With RFI grounding and standard plug variants, alongside M39029 rear release crimp contacts, they provide flexibility for different applications. Meeting MIL-DTL-38999 II specifications, these connectors are ideal for military, aerospace, and industrial use, offering robust performance in harsh conditions.