MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts housed in a secure insert. These connectors are sealed for protection, operating reliably in temperatures ranging from -65°C to 200°C. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like gold, electroless nickel, and cadmium finishes, they ensure durability and corrosion resistance. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 II specifications.