MIL-DTL-38999 Series II connectors offer reliable connectivity with up to 128 contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The aluminum shells come with plating options including electroless nickel and cadmium finishes, meeting RoHS compliance standards for environmental safety. Ideal for military and industrial applications, these connectors provide durability and performance in demanding conditions.