The inner hexagon screws are beautiful, and the nuts are not directional, unlike the outer hexagon bolts. For example, there are multiple bolt heads exposed on the table. If the direction of his head is not unified, it will feel messy, and the inner hexagon feels very neat.

In addition, in terms of use, inner hexagonal screws are mostly used in places where the force is relatively precise and not too large, such as electronic and mechanical equipment. Large-scale equipment with large forces, such as heavy machinery, metallurgical equipment, and large-scale pressure machinery, use inner hexagonal screws less. Of course, the use is not absolute, and it has also been seen that there are some applications in coal excavators and large construction machinery, but there are relatively few.