MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts and a wide operating temperature range from -65°C to 200°C. These connectors come in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, with thin-walled construction for restricted spaces. Available in aluminum shells with multiple plating choices including cadmium and nickel, they offer reliable performance in demanding applications. With M39029 rear release crimp contacts and bayonet coupling, they ensure secure connections. Meeting military specifications, these connectors are ideal for aerospace, defense, and other high-reliability industries.