Bolt has many names, everyone's name may be different, someone called a screw, someone called a bolt nails, someone called the fastener. Although there are so many names, but the meaning is the same, are bolts. Bolts are a general term for fasteners. The bolts are the physical and mathematical principles of the circular rotation and friction of the object, and gradually tighten the tools of the objects.
Bolts in the daily life and industrial manufacturing, is indispensable, the bolt is also known as industrial rice. Visible bolts are widely used. The use of bolts are: electronic products, mechanical products, digital products, electrical equipment, mechanical and electrical machinery products. Ships, vehicles, water projects, and even chemical experiments are also useful to bolts. It's a lot of places that are useful to bolts anyway. Special like the precision bolts used in digital products. Miniature bolts for use in DVDs, cameras, glasses, clocks, electronics, television, electrical products, musical instruments, furniture, etc. general bolts; As for engineering, construction and bridges, the use of large bolts and nuts; Traffic instruments, aircraft, trams, automobiles, etc. Bolts have an important role in industry, as long as there is industry on Earth, the function of bolts is always important.