MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in aluminum shells with multiple plating options, such as cadmium and nickel, they ensure durability and reliability. Utilizing M39029 rear release crimp contacts, these connectors come in 9 shell sizes and 52 insert arrangements. Meeting military specification MIL-DTL-38999 II, they are ideal for applications requiring high performance in demanding conditions.