MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts sealed within an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliability 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 come in aluminum shells with plating options including gold, electroless nickel, and cadmium-free finishes, ensuring durability and performance. Featuring removable crimp contacts and bayonet coupling, they are suitable for military and industrial applications requiring secure and efficient electrical connectivity.