There are many names for screws, and everyone's name may be different. Some people call them screws, some people call them screws, some people call them standard parts, and some people call them fasteners. Although there are so many names, they all mean the same thing. They are all screws. Combination screws are a general term for fasteners. The principle of the screw is to use the physics and mathematics principle of the oblique circular rotation of the object and the friction force to gradually tighten the utensils.

Screws are indispensable in daily life and industrial production. Manufacturers of combined screws and bolts are also known as the rice of industry. It can be seen that the combined screws are widely used. The scope of application of screws are: electronic products, mechanical products, digital products, electrical equipment, mechanical and electrical products. Screws are also useful in ships, vehicles, water conservancy projects, and even chemical experiments. Anyway, screws are used in many places. Such as precision screws used on digital products. Mini screws used in DVDs, cameras, glasses, watches, electronics, etc.; general screws used in televisions, electrical products, musical instruments, furniture, etc.; large screws and nuts are used in engineering, construction, and bridges; transportation equipment, airplanes, trams, automobiles And so on, the combination of large and small screws is used. Screws have important tasks in industry. As long as industry exists on the earth, the function of combined screws will always be important.

There are many types of combination screws, whether it is combination screws for glasses or large screws for large-scale heavy electrical engineering. The accuracy of screws is usually 6g (level 2, American standard "IFI" is 2A thread), and the rough screw used in construction engineering is 1g.

The application range of combined screws is so wide, so the screw market is definitely relatively large, and the demand must be relatively huge, and there must be more screw manufacturers in the screw industry. When purchasing a professional combination screw purchasing manufacturer, they must first understand some professional basic knowledge of screws, such as screw classification standards and American screw specification tables.