MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts within an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in harsh conditions. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options like electroless nickel, they guarantee durability and corrosion resistance. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 II specifications, providing secure and efficient electrical connections.