Combination screws are used in a wide range of applications. The combined screw is provided with only one spring washer or one flat washer, or may be provided with only two assemblies of a spline. Such a combination screw is still strong when fixing the object, and the fixed object of the combinatio......

Hot-dip galvanized bolts are used to protect a relatively good surface from rust, but in the face of natural weathering and corrosion, they also seem to rust. In order to avoid this phenomenon, the following measures should be taken.

Nuts are parts that are closely connected to mechanical equipment.

In addition to various metallic materials, non-metallic materials such as plastics and fiberglass are also widely used. Hardware products play an important role in the survival and development of human beings.

Bolts: Bolts are cylindrical threaded fasteners that are paired with nuts during use. It is mainly used to fasten and connect two parts with through holes. This connection form is called bolt connection.