The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connections. With a wide range of plating options including gold, electroless nickel, and cadmium finishes, they ensure durability and conductivity. Ideal for military and industrial applications, these connectors are built to withstand extreme temperatures ranging from -65°C to 175°C, meeting stringent MIL-DTL-38999 II specifications.