MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, they provide reliable performance in extreme conditions. These connectors come in various styles including front wall mount, rear wall mount, jam nut, and box mount receptacles, accommodating different installation needs. Featuring durable aluminum shells with plating options such as cadmium and nickel, they ensure long-lasting protection against corrosion. Utilizing M39029 rear release crimp contacts, they offer secure connections and are available with RoHS compliant finishes. Ideal for military and industrial applications, these connectors are known for their rugged construction and high reliability.