The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are versatile for various applications. Available in different mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in aluminum shells with options for plating, such as cadmium and nickel, meeting RoHS compliance standards. With removable crimp contacts and bayonet coupling, they ensure secure and reliable connections. Suitable for military and industrial use, these connectors are durable and reliable, with a service rating of Class E for environmental resistance.