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There are many names for bolts, and everyone may have different names. Some are called screws, some are called bolts and nails, and some are called fasteners. Although there are so many names, they all mean the same. They are all bolts. Bolt is a common term for fasteners. Bolt is a tool to fasten objects and mechanical parts step by step by using the physical and mathematical principles of inclined circular rotation and friction of objects.

Bolts are indispensable in daily life and industrial production and manufacturing. Bolts are also known as the rice of industry. It can be seen that bolts are widely used. The application scope of bolts includes: electronic products, mechanical products, digital products, power equipment, electromechanical mechanical products. Bolts are also used in ships, vehicles, hydraulic engineering, and even chemical experiments. Anyway, bolts are used in many places. Such as precision bolts used in digital products. Micro bolts for DVD, camera, glasses, clocks, electronics, etc; General bolts for TV, electrical products, musical instruments, furniture, etc; As for engineering, construction and bridges, large bolts and nuts are used; Transportation equipment, aircraft, trams, cars, etc. are both large and small bolts. Bolts have important tasks in industry. As long as there is industry on earth, the function of bolts will always be important.