The MIL-DTL-38999 Series II connectors offer rugged durability with up to 128 contacts enclosed 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 secure connections. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they ensure reliable performance in temperatures ranging from -65 °C to 200 °C. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 II specifications.