wheel bolt

Fasteners are a kind of mechanical parts used for fastening and connecting, which are widely used. Characteristics of fasteners: a wide variety of specifications, performance and use of different, and standardization, serialization, high degree of generalization. As the specifications, dimensions, tolerances, weight, performance, surface conditions, marking methods, acceptance inspection, marking and packaging of each specific fastener product are specified separately in several national (industry) standards, such as British, American and German, However, Chuntai company is a leading enterprise specializing in manufacturing aerospace, automobiles, motorcycles, electrical appliances, GB, BS, ANSI, DIN, JIS standard parts and non-standard parts customization, as well as various difficult non-standard parts.
Fastener is the most widely used mechanical basic part. As the fastener products are in line with international standards, the export volume of Chinese fastener products is still a large country, in order to promote international comprehensive cooperation and benign competition, has an important significance and strategic significance.
Fastener is a kind of mechanical parts used when two or more parts are fastened together into a whole. The market has also become a standard part.
It usually includes the following 12 types of parts: ① Bolt: a type of fastener composed of two parts: the head and the screw, which needs to be matched with the nut, for fastening and connecting two parts with a through hole; (2) Stud: no head, only both ends are a kind of fastener with external thread; Screw: a type of fastener composed of two parts of the head and screw, according to the purpose of three categories: machine screws, set screws and special purpose screws; (4) Nuts: with internal threaded holes, with bolts, studs or machine bolts, used to tighten the two products, make it into a whole; (5) Tapping screw: similar to the machine screw, but the thread on the screw for special tapping screw thread;
⑥ Wood screw: the thread of the screw is a special thread of the wood screw, which can be directly screwed into the wooden component; ⑦ washer: between the supporting surface of bolts, screws or nuts and connecting parts surface; The ring: for installed in the machine, equipment shaft groove or hole groove, play a role in preventing the movement of left and right; ⑨ Pin: mainly used for positioning parts, some can also be used for connecting and fixing parts; ⑩ Rivets: head and nail rod two parts of a type of fastener, used to fasten the connection of two parts with a through hole; 11. Assembly parts: a class of products supplied in combination, bolts and flat washers are supplied in combination; 12. Welding nails: Because of the light energy and nail head composed of different fasteners, with welding method to fix it on a part, in order to connect with other parts

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