MIL-DTL-38999 Series II connectors feature up to 128 contacts within an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. These connectors come in various configurations such as front and 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 like iridescent yellow cadmium and electroless nickel. Meeting military specification MIL-DTL-38999 II, these connectors provide reliable performance in demanding applications.