MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles, with options for straight, RFI grounding, and standard plugs. Available in aluminum shells with multiple plating choices, such as gold, electroless nickel, and cadmium-free finishes, these connectors meet military specification MIL-DTL-38999 II. With contact sizes ranging from 22D to 12 and shell sizes from 8 to 24, they offer versatility for different applications. Ideal for demanding environments, these connectors ensure reliable performance with 500 mating cycles and environmental resistance.