Cylindrical head hexagon socket bolt

Cylindrical head hexagon screws, also referred to as hexagon bolts, cup head screws, hexagon screws, their names are different, but the meaning they represent is the same. In general, there are 4.8 grades, 8.8 grades, 10.9 grades, and 12.9 grades for hexagon socket head screws. Also called hexagon socket screws, also called hexagon socket bolts. Its head is hexagon and cylindrical. According to the material, it is divided into stainless steel and iron.