Fastening Two or more parts (or members) a general term for a class of mechanical parts used when fastening together into a whole.
Fastener is a kind of widely used mechanical parts used for fastening connection. Fasteners, industry widely used, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic, and so on, in all kinds of machinery, equipment, vehicles, ships, railways, Bridges, buildings, structures, tools, instruments, chemical industry, instrument and apparatus, such as the above, you can see all kinds of fasteners, is the most widely used mechanical components. It is characterized by a wide variety of specifications, performance and use of different, and standardization, serialization, universalization of the degree is also extremely high. Therefore, some people have national standards of fasteners known as standard fasteners, or referred to as standard parts.
