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. Available in various configurations, such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with multiple plating options including cadmium and nickel. Utilizing M39029 rear release crimp contacts, they ensure reliable connections. With a service rating of I and RoHS compliance for certain finishes, these connectors are suitable for demanding applications requiring high performance and durability.