The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With aluminum shells and a range of plating options such as gold and electroless nickel, these connectors ensure durability and reliable performance. Meeting military specifications, they are ideal for demanding environments requiring rugged connectivity solutions.