MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors utilize M39029 rear release crimp contacts and come in aluminum shells with plating options including cadmium and nickel. Offering RoHS compliant finishes, they ensure both durability and environmental safety. With a bayonet coupling and gold-plated removable crimp contacts, these connectors guarantee secure and efficient electrical connections, making them ideal for military specifications and demanding applications.