The fastener is a general term for a type of mechanic […]
The fastener is a general term for a type of mechanical parts used when two or more parts (or components) are fastened and connected into a whole with stainless steel nuts. It is the most widely used and used quantity in various sectors of the national economy The most basic mechanical parts, known as the "meter of industry", are used in various machinery and equipment, vehicles and ships, aircraft and satellites, railway bridges, building structures, tools, instruments, and daily necessities. Various and considerable fasteners, for example, there are thousands of fasteners in a car.
At present, global fasteners are mainly used in the automotive industry, electronics industry, and construction and maintenance industries. Among them, the automobile industry is the largest user, and the demand accounts for about 23.2% of the total fastener sales; followed by the maintenance industry market and the construction industry, accounting for about 20% of the total fastener sales; and the third is the electronics industry, accounting for about 16.6% of total fastener sales.
China's fasteners are characterized by a wide variety of specifications, different performance and use, and a high degree of standardization, serialization, and generalization. Therefore, some people call a type of fasteners that have national standards as standard fasteners or simply Standard Parts.
China fasteners are usually divided into 12 categories, such as bolts, studs, screws, nuts, self-tapping screws, wood screws, washers, retaining rings, pins, rivets, assemblies and connecting pairs, and welding nails. Some categories can also There are many classifications according to its purpose, material used, strength grade, shape, surface treatment method, etc.