MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, they ensure reliable performance in demanding conditions. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, these connectors feature durable aluminum shells with options for plating finishes including electroless nickel and cadmium olive drab. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. With a straight plug design and bayonet coupling, they are ideal for military and aerospace applications requiring rugged, high-performance connectivity.