The MIL-DTL-38999 Series II connectors are designed for demanding environments, offering up to 128 contacts in a secure insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The thin-walled, restricted length design ensures space efficiency without compromising performance. Utilizing M39029 rear release crimp contacts in multiple sizes, these connectors guarantee reliable connections. Constructed with aluminum shells and available in different plating options, including RoHS compliant finishes, they offer durability and corrosion resistance. Suitable for military and industrial use, these connectors are essential for ensuring secure and efficient electrical connections in harsh environments.