The MIL-DTL-38999 Series II connectors boast exceptional durability and versatility with up to 128 contacts housed in a rugged insert. Designed for harsh environments, these connectors are environmentally sealed and can operate reliably in temperatures ranging from -65 °C to 200 °C. Offering various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors feature M39029 rear release crimp contacts, ensuring secure and efficient connections. Crafted from aluminum, they come with a choice of plating options including cadmium and nickel, meeting stringent military specifications. With RoHS compliant finishes, they guarantee both performance and environmental responsibility, making them ideal for demanding applications in aerospace, defense, and industrial settings.