MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors operate in temperatures ranging from -65 °C to 200 °C. Available in various configurations such as front wall mount, rear wall mount, and jam nut receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs with a 90-degree cable clamp, they cater to diverse connectivity needs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with aluminum shells and offering a selection of plating options including cadmium-free finishes, they meet stringent military specifications for performance and durability. Suitable for use in demanding environments, these connectors provide excellent conductivity and ingress protection, making them ideal for aerospace, defense, and industrial applications.