The MIL-DTL-38999 Series II connectors, designed for harsh environments, offer reliable performance with up to 128 contacts housed in an insert. These environmentally sealed connectors have a wide operating temperature range from -65 °C to 200 °C and come in various configurations including front and rear wall mount, as well as jam nut and box mount receptacles. Featuring thin-walled construction, they are ideal for restricted length applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells, they are offered with multiple plating options including cadmium and nickel finishes. With RoHS compliant versions available, these MIL-DTL-38999 II connectors ensure durability and performance in demanding military and aerospace applications.