Help customers choose the most suitable decorative hardware products
Fasteners are an indispensable key component in mechanical engineering and are widely used in the connection and fixing of various equipment and structures. They ensure the stability and reliability of the mechanical structure by applying the appropriate pressure to bind two or more components tightly together. There are many types of fasteners, including bolts, nuts, screws, washers, pins, etc., each type has its specific purpose and advantages. For example, bolts and nuts are often used in connection parts that require frequent disassembly, such as the assembly of automotive engines; Screws are suitable for fixing smaller components, such as the assembly of electronic devices; Washers are used to distribute pressure, adjust clearance, or provide a seal. The selection and design of fasteners need to be optimized according to the specific application environment to ensure their stable performance under different temperature, pressure and corrosion conditions. Choosing the right fasteners can not only improve the strength and durability of the mechanical structure, but also significantly reduce maintenance costs and failure rates, which is the basis for ensuring the efficient operation of equipment and systems.
Bolt
A bolt is a fastener widely used in mechanical engineering, mainly used to firmly connect two or more parts together. It usually consists of two parts: a screw and a nut, with an external thread on the screw that can be matched with a hole or nut with an internal thread. By rotating the nut, the bolt makes the screw move axially under the action of the thread, thereby applying the fastening force and binding the parts tightly. There are many types of bolts, including hexagon head bolts, countersunk bolts, T-bolts, etc., each type has its own specific application scenario. For example, hexagon head bolts are widely used in situations requiring high strength connections, such as Bridges and building structures, because of their ease of applying torque; Countersunk bolts are suitable for assembly areas that require a flat surface, such as the housing of electronic equipment. The selection and design of bolts need to be optimized for the specific application environment to ensure stable performance under different temperature, pressure and corrosion conditions. Choosing the right bolt can not only improve the strength and durability of the mechanical structure, but also significantly reduce maintenance costs and failure rates, and is a key component to ensure the efficient operation of equipment and systems.
Nut
Nuts are important fasteners used with bolts. It is a metal part with internal threads. The main function of the nut is to cooperate with the bolt to provide tightening force through the screwing of the thread. When the nut is rotated along the external thread of the bolt, it gradually tightens, thus securing the connected parts tightly together and ensuring the stability of the structure. Various shapes of nuts, common hex nuts, this shape is easy to use tools such as wrenches to apply torque for tightening operation; There are also other shapes such as square nuts. In terms of material, there are steel nuts, which have high strength and are suitable for the connection of greater tension and pressure, such as in the application of large machinery and building structures; There are also copper nuts, etc. Copper nuts are used in some occasions with special requirements for electrical conductivity or corrosion resistance, such as electrical equipment connections or small parts connections in slightly corrosive environments. The size specifications of nuts are rich to adapt bolts of different diameters and pitch, so as to meet the needs of various mechanical assembly and equipment manufacturing.
Screws
Screw is an important fastener, which is widely used in many fields.
It consists of a head and a screw with external threads. The shape of the head is diverse, the common slot, cross slot, hex, etc., the different head shapes are convenient to use the corresponding tools for operation. The use of screws does not require nuts like bolts, and can be directly screwed into the prefabricated threaded holes of the connected parts, which makes them unique advantages in some cases where space is limited or only one side of the operation is required. For example, in the assembly of electronic equipment, the space is narrow and mostly single-sided assembly, and the screw can play a good fixed role. In terms of material, steel screws provide high-strength connection, suitable for structural parts under greater stress; There are also plastic screws, which are often used for occasions with special requirements for weight and conductivity, such as the fixing of some lightweight electronic equipment housings. Screws are available in various sizes to meet different connection requirements, and parameters such as thread type, length and diameter can be selected according to specific application scenarios to ensure the firmness and stability of the connected parts.
Gasket
A washer is a small component that plays an important auxiliary role in mechanical assembly and connection.
From the functional point of view, gaskets mainly have a variety of uses. For one thing, it diffuses stress. When the bolt or screw is tightened, the washer can increase the contact area and avoid damage to the surface of the connected part due to excessive local pressure. For example, when some soft materials are connected, the washer can effectively protect the surface of the material. Second, the washer can be used to adjust the clearance. In some assembly scenes, due to the machining accuracy of the parts or structural design, there is a gap that needs to be fine-tuned, and the different thickness of the gasket can meet this demand. Third, part of the washer also has a sealing function, in the pipeline connection or sealing requirements of the structure, the washer deformation under the action of bolt fastening force, fill the gap, to prevent fluid or gas leakage. Gaskets of various materials, common metal gaskets, such as iron gaskets, copper gaskets, stainless steel gaskets, etc., they are high strength, suitable for withstand greater pressure occasions; There are also non-metallic gaskets, such as rubber gaskets, paper gaskets, etc., which may perform better in sealing and are often used where the sealing requirements are high and the pressure is relatively small.
Rivet
A rivet is a fastener used to permanently join two or more parts.
It usually consists of a nail rod and a nail cap. The connection principle of the rivet is to insert the nail rod into the prefabricated hole of the connected part, and then deformation operations are carried out on one end of the nail rod, such as upsetting, extrusion, etc., so that the nail rod forms a new head, so that the parts are tightly riveted together. This connection is irreversible, and once the riveting is complete, a strong connection is formed between the components. The type of rivet is rich and diverse, according to the shape of the half round head rivet, countersunk head rivet, etc., different shapes are suitable for different assembly requirements. Semi-round head rivets are often used in places where the appearance requirements are not particularly strict, but strong connection strength is required, such as the assembly of some ordinary mechanical shells; Countersunk rivets are used when the surface is required to be flat and smooth, like the riveting of some parts of the surface of the aircraft fuselage. In terms of material, aluminum rivets, due to its light weight and corrosion resistance, are widely used in aerospace and other fields with high weight and corrosion resistance requirements; There are also steel rivets, which have higher strength and are suitable for structural connections under greater tension or pressure, such as partial connections in bridge construction. Rivets play an irreplaceable role in many industries, especially in situations where connection reliability is required and disassembly is not required.
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