MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. These environmentally sealed connectors have an operating temperature range from -65°C to 200°C. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure versatile installation. Available in aluminum shells with multiple plating options including cadmium-free finishes, they meet RoHS compliance. With M39029 rear release crimp contacts, they guarantee secure connections. Suitable for military and industrial applications, these connectors provide reliable performance in demanding conditions.