Fascinated parts are a type of mechanical parts for fastening connection and extremely widely used.Tightening parts, wide use of the industry, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic and other industries, in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, Chemical, instruments, and supplies, you can see a variety of fasteners, which are the most widely used mechanical foundation.
What parts are there in fasteners
It usually includes the following 12 types of parts:
1. Bolt: A type of fastener composed of two parts: head and screw (cylindrical body with an external thread) must be matched with the nut to fasten the two parts with pores with pores.This connection form is called a bolt connection.If you spin the nut from the bolt, you can separate these two parts, so the bolt connection belongs to the removable connection.[
2. Nail: There is no head on the head, only a type of fastener with a thread at both ends.When connecting, one end must be spin into parts with inner thread holes, and the other end must be passed through the parts with pores, and then the nut is rotated, even if these two parts are tightly connected into a whole.This form of connection is called a snail connection, which is also a detachable connection.It is mainly used to be connected to one of the parts of the connected parts, requires compact structures, or frequently disassembled. It is not advisable to use bolt connection.
3. Screw: It is also a type of fastener composed of two parts: head and screw. It can be divided into three categories according to the purpose: machine screws, tight screws and special use screws.Machine screws are mainly used for a tightening threaded parts, which is tightly connected with a part with a pores. There is no need to coordinate the nut (this connection form is called a screw connection, which is also a removable connection; it can alsoCombine with the nut, for the fastening connection between two parts with pores.) The tight screw is mainly used to fix the relative position between the two parts.Special use screws such as suspension screws are used for hanging parts.[1]
4. Naruts: With internal thread holes, the shape is generally displayed as a flat hexagonal column, and there are flat -legged or flat cylinders. They are used with bolts, screws or machine screws.It becomes a whole.
5. Self -attack screws: Similar to the machine screw, but the thread on the screw is a special self -attack screws.It is used to tighten the two thin metal components to make it a whole. The component needs to be made in advance. Because this screw has high hardness, it can be directly spin into the hole of the component to make the component in the component to make the component in the component to make the component in the component to make the component in the component to make the component in the component to make the component in the component to make the component in the component to make the component in the component.Internal threads that form a response
6. Wood screw: It is also similar to the machine screw, but the screw on the screw is a special wood screw thread, which can be directly spin into the wooden component (or parts) to use it to use a metal (or non -metal) with a hole in a hole.The parts are tightly connected to a wooden component.This connection is also a disassembly connection.
7. Circle: The shape of a flat ring -shaped type is a type of fastener.The support surface of the bolt, screw or nut and the surface of the connection parts plays an increase in the area of ??the connected parts contact surface, reducing the pressure of the unit area and protecting the surface of the connected parts.It can also play a role in preventing the nut back loose.
8. Instant: Installed in the axis or shaft holes of the machine and equipment, it plays a role in preventing the parts on the shaft or on the hole.
9. Sales: The main part of the parts are positioned, and some can also be used for parts connection, fixed parts, transmission power or lock -up fasteners.[1] 10. Rivet: There is a type of fastener composed of two parts: head and nail rod, which is used to fasten the two parts (or components) of two holes to make it a whole.This connection form is called rivet connection, referred to as rivet.It is a non -demolition link.Because the two parts connected together are separated, the rivets on the part must be destroyed.
11. Component and connection sub -: The composition is a type of fastener supplied by a combination, such as a combination of a machine screw (or bolt, self -confession screw) with a flat pad (or spring cushion, locking pad) combination;A type of fastener supplied by a special bolt, nut, and padding, such as the steel structure, is connected to the vice with a high -strength hexagonal bolt.
12/welded nails: The heterogeneous fastener composed of a nail pole and nail head (or nail -free head) is connected to one part (or component) on a welding method to connect with other parts.
Where is the application of fastening components
The fastener is a type of mechanical parts used for fastening connection and widely used.Various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, instruments and supplies, you can see a variety of fasteners.It is characterized by variety and specifications, different performance purposes, and has a high degree of standardization, series, and generalization.Therefore, some people also refer to a type of fastener of existing national standards as standard fasteners, or referred to as standard parts.The fastener is the most widely used mechanical foundation.As my country joined the WTO in 2001 and entered the ranks of international trading countries.A large number of fastest products in my country have been exported to countries around the world and countries around the world.As one of the products with a large import and export volume in my country, fastening parts realize in line with international standards. It has important practical significance and competition for promoting Chinese fastener enterprises to the world and promoting the comprehensive participation of international cooperation and competition. Strategic significance.Due to the specifications, sizes, sizes, tolerances, weight, performance, surface conditions, marking methods of each specific fastener product, as well as specific requirements for acceptance inspection, logo and packaging.

Related tags： Machinery