MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, suitable for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. These connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with plating options such as cadmium and nickel. With contact arrangements using M39029 rear release crimp contacts, they ensure reliable performance and durability. The connectors, designed for secure mating with bayonet coupling, are RoHS compliant, making them suitable for diverse industries requiring high-quality, rugged connectivity solutions.