MIL-DTL-38999 Series II connectors feature up to 128 contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These connectors come in various styles, including front wall mount, rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts. Constructed with aluminum shells, they offer plating options such as cadmium and nickel. With RoHS compliant finishes, these connectors provide reliable performance in military and industrial applications.