The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, as well as jam nut and box mount receptacles, they offer versatility in installation. These connectors, meeting military specification standards, are built for durability with an operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize rear release crimp contacts for secure connections. The aluminum shells come with multiple plating options, including cadmium-free finishes for RoHS compliance. With gold contact plating and a conductive design, these connectors ensure reliable performance in demanding applications.