The sliding nut fits to the corner tab “number one” as it is the lowest corner tab of the cube.  This will allow an easy way to screw in the pin without holding the bottom nut. Sides of the dock, should be attached by a normal nut and a “lug connector” to replace the pin. Made out of High density polyethylene, our sliding nuts gives a strong and durable joint and increases the performance of the structure. All our accessory are made of the same material as the base cubes, therefore they give same levels of strength and environmental care.