MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within 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 such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The aluminum shells come in different plating options including electroless nickel and cadmium finishes, with RoHS compliant versions available. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connectivity. With a focus on durability and performance, they are suitable for military and industrial use.