The high-performance WF004 hex nut is composed of the nut body and the base. The nut body is hexagonal prismatic, with a circular through-hole in the middle. This through-hole features an internal thread. One side of the nut body has a rib, and its opposite side also has a rib. The product's ribs are centrally located on the side of the nut body, shaped as cylinders, and are formed in one piece with the nut body. The base is located below the nut body, and the product's base is circular, with a hollow circle in the middle. The hollow part of the base has an internal thread, half the height of the base. The hollow part of the base and the circular through-hole of the nut body are of the same size and overlap. The bottom surface of the base has four welding points, evenly distributed around the outer edge of the bottom surface. The welding points are hemispherical in structure, with a height of 1.5 cm. The firmness of this high-performance welded hex nut has been enhanced.