The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65°C to 200°C. Available in various mounting styles including front wall, rear wall, jam nut, and box mount receptacles, they cater to diverse installation needs. These connectors, designed for harsh environments, come in nine shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in multiple sizes. Built with aluminum shells and offering plating options such as electroless nickel and cadmium, they ensure durability and reliability. With a Bayonet coupling and gold-plated removable crimp contacts, they guarantee secure connections. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 II specifications, providing exceptional performance in demanding environments.