MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The plugs come in straight, RFI grounding, and standard options with a 90-degree cable clamp, catering to different connectivity needs. Utilizing M39029 rear release crimp contacts in various sizes, these connectors ensure secure and reliable connections. Constructed with aluminum shells and offering multiple plating options such as electroless nickel and cadmium finishes, they provide durability and corrosion resistance. Meeting MIL-DTL-38999 II military specifications, these connectors are suitable for use in rugged environments.