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by zhaozhi
Application range of 2H hexagon nuts
December 21, 2020 in Travels
The 2H hex nut is used in conjunction with screws, bolts, and screws to connect and tighten parts. Among them, type 1 six-purpose nuts are the most widely used. Grade C nuts are used for machines, equipment or structures with rough surfaces and low precision requirements; Grade A and B nuts are used for smoother surfaces and higher precision requirements. On the machine, equipment or structure. The thickness M of the type 2 hex nut is relatively thick, and it is mostly used in occasions that often require assembly and disassembly. The thickness M of the hexagonal thin nut is thin, and it is mostly used in occasions where the surface space of the connected parts is restricted.
As the height of the nut increases, the guaranteed stress index can be achieved at a lower quenching and tempering hardness, so the toughness of the nut is increased. Classified by tooth distance: standard teeth, regular teeth, fine teeth, very fine teeth and reverse teeth. Classified by material: stainless steel hexagon nuts and carbon steel hexagon nuts, copper hexagon nuts, iron hexagon nuts. Classified by thickness: hexagonal thick nuts and hexagonal thin nuts. Classified by method of use: hot-melt copper nuts, hot-pressed copper nuts, embedded copper nuts and ultrasonic copper nuts.
There are generally two types of 2H hex nut, one is iron, which is carbon steel. One is stainless steel, and of course there are copper and aluminum nuts, but these are less used. Copper is still somewhat useful, and nuts like aluminum are rarely used.
by zhaozhi
2H hexagon nuts are classified according to material
December 14, 2020 in Travels
2H hex nut is a nut, a part that is screwed together with a bolt or screw for fastening. A component that must be used in all production machinery is divided into carbon steel, stainless steel, and non-ferrous metals (such as copper). ) And other major types.
Type I hexagonal nuts are the most widely used. Type I nuts are divided into three levels: A, B, and C. Among them, A and B nuts are suitable for machines, equipment and structures with small surface roughness and high precision requirements. Grade C nuts are used for machines, equipment or structures with rough surfaces and low precision requirements; Type 2 hexagon nuts are thicker, and are often used in occasions where assembly and disassembly are often required.
The DISC-LOCK lock nut is composed of two parts, each part has a staggered cam, because the internal wedge design slope angle is greater than the bolt nut angle, this combination will be tightly bitten into a whole, when vibration occurs The convex parts of the DISC-LOCK anti-loosening nut are staggered to each other to generate lifting tension, so as to achieve a perfect anti-loosening effect.
2H hex nut is suitable for industries: automobile industry-cars, trucks, buses, compressors, construction machinery, wind power equipment, fasteners, agricultural machinery, foundry industry, drilling equipment, shipbuilding industry, military.
by zhaozhi
The classification range and life application of bolts
December 7, 2020 in Uncategorized
Heavy hex bolt is a kind of bolts, bolts, mechanical parts, cylindrical threaded fasteners with nuts. A fastener consisting of a head and a screw (cylinder with external thread), which needs to be matched with a nut to fasten and connect two parts with through holes. This connection method is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.
There are many names for bolts, and each person’s name may be different. Some people call it a screw, some call it a bolt, and some call it a fastener. Although there are too many names, they all mean the same thing. They are all bolts. Bolts are the general term for fasteners. Bolts are tools that use physical and mathematical methods of oblique rotation and friction of objects to gradually tighten objects and parts.
Bolts are essential in daily life and industrial production. Bolts are also called industrial meters. It can be seen that bolts are widely used. The application range of bolts includes: electronic products, mechanical products, digital products, electrical equipment, electromechanical products.
The performance grades of steel structure connecting bolts are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, among which bolts of grade 8.8 and above are made of low carbon alloy steel or medium carbon steel , And after heat treatment (quenching, tempering), usually called high-strength bolts, the rest are usually called ordinary bolts. The bolt performance grade label consists of two numbers, which represent the nominal tensile strength value and yield ratio of the bolt material.
Preventive measures for heavy hex bolts: check the newly replaced connecting rod bolts every time they are repaired. Pay attention to whether there are cracks or dents on the head of the bolt, the guide part and the thread, and whether the tooth profile and pitch of the thread are abnormal. If there is an abnormal situation, it should not be used. When assembling the connecting rod cover, please use a torque wrench to tighten it according to the specified standard to prevent the torque from being too large or too small. Please use the connecting rod bolts produced by the supporting factory.
by zhaozhi
Anti-loosening principle of 2H heavy hex nut
November 30, 2020 in Travels
2h heavy hex nuts are a kind of nut. A nut is a nut. It is a part screwed together with a bolt or screw for fastening. A component that must be used in all production machinery is divided into carbon steel according to different materials , Stainless steel, non-ferrous metals (such as copper) and other major types.
The DISC-LOCK lock nut is composed of two parts, each part has a staggered cam, because the internal wedge design slope angle is greater than the bolt nut angle, this combination will be tightly bitten into a whole, when vibration occurs The convex parts of the DISC-LOCK anti-loosening nut are staggered to each other to generate lifting tension, so as to achieve a perfect anti-loosening effect.
The main features of 2H heavy hex nuts: easy to install, integral, no washers, easy to disassemble, reusable, made of medium carbon steel, and can be used with 8.8, 10.9, and other high-strength bolts.
Hexagon nuts are used in conjunction with screws, bolts, and screws to connect and tighten parts. Among them, type 1 six-purpose nuts are the most widely used. Grade C nuts are used for machines, equipment or structures with rough surfaces and low precision requirements; Grade A and B nuts are used for smoother surfaces and higher precision requirements. On the machine, equipment or structure. The thickness M of the type 2 hex nut is relatively thick, and it is mostly used in occasions that often require assembly and disassembly. The thickness M of the hexagonal thin nut is thin, and it is mostly used in occasions where the surface space of the connected parts is restricted.
Application range of 2h heavy hex nuts: automobile industry-cars, trucks, buses, compressors, construction machinery, wind power equipment, fasteners, fasteners, agricultural machinery, foundry industry, drilling equipment, shipbuilding industry, military , Mining equipment, etc.
by zhaozhi
How to customize fasteners
November 23, 2020 in Uncategorized
To custom fasteners, you should first understand fasteners, which are a type of mechanical parts that are used for fastening connections and are extremely widely used. Fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc., in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments All kinds of fasteners can be seen on, chemical, instrument and supplies, etc., which are the most widely used mechanical basic parts. It is characterized by a wide variety of specifications, different performance and uses, 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.
Fasteners include: bolts, studs, screws, nuts, washers, and pins. Locking or seizure often occurs on fasteners made of stainless steel, aluminum alloy and titanium alloy. These metal alloys have anti-corrosion properties. When the surface is damaged, a thin oxide layer is formed on the metal surface to prevent Further corrosion. When stainless steel fasteners are locked, the pressure and heat generated between the teeth will destroy this oxide layer, causing blockage or shearing between the metal threads, and then adhesion. When this phenomenon continues to occur, the stainless steel fasteners will be completely locked and can no longer be removed or continued to be locked. Usually this series of blocking, shearing, adhering, and locking actions occur in just a few seconds, so a correct understanding of the use of such fasteners can prevent this phenomenon.
Ningbo Zhenhai Yongding Fastener Manufacturing Co., Ltd. can customize fasteners to ensure product quality and fast delivery.
by zhaozhi
What is the definition of hex nut?
November 16, 2020 in Travels
Hex nuts are also called hexagon nuts. Generally, there are many types of nuts, including hexagon nuts, round nuts, square nuts and so on. Some standards for nuts are quite clear. Some specifications and size standards, material requirements standards, electroplating standards, etc. are relatively clear. Different types of nuts also have different standards. Let me introduce the specifications and standards of nuts in detail.
Hexagon nuts are used in conjunction with screws, bolts, and screws to connect and tighten parts. Among them, type 1 six-purpose nuts are the most widely used. Grade C nuts are used for machines, equipment or structures with rough surfaces and low precision requirements; Grade A and B nuts are used for smoother surfaces and higher precision requirements. On the machine, equipment or structure. The thickness M of the type 2 hexagon nut is thicker, and it is mostly used in occasions that often require assembly and disassembly. The thickness M of the hexagonal thin nut is relatively thin, and it is mostly used where the surface space of the connected parts is restricted.
As a standard part, it should have its own general specifications. For hexagon nuts, commonly used standards are: GB52, GB6170, GB6172 and DIN934. The main differences between them are: GB6170 is thicker than GB52, GB6172 and Thick from DIN934, commonly known as thick nut. The other is the difference between the opposite sides. In the M8 nut series, the opposite sides of DIN934, GB6170 and GB6172 are 13MM which is 1MM smaller than the 14MM of GB52. For the M10 nut, the opposite side of DIN934 and GB52 is 17MM, The opposite side of GB6170 and GB6172 is 1MM larger. For M12 nuts, the opposite side of DIN934 and GB52 is 19MM than the opposite side of GB6170 and GB6172 18MM is 1MM larger. For M14 nuts, the opposite side of DIN934 and GB52 is 22MM, which is 1MM larger than the opposite side of GB6170 and GB6172, 21MM. The other is the M22 nut. The opposite side of DIN934 and GB52 is 32MM, which is 2MM smaller than the 34MM opposite of GB6170 and GB6172. (GB6170 and GB6172 have the same width on opposite sides except for their different thicknesses.) Other specifications can be used universally regardless of thickness.
There are generally two types, one is iron, that is, carbon steel. One is stainless steel, and of course there are copper and aluminum nuts, but these are less used. Copper is still useful, and aluminum nuts are rarely used.
The stud is a solid piece that bai uses to match the nut. Nuts are parts that connect mechanical equipment tightly. The nut is a part that connects the dao machinery and equipment closely. Through the inner thread, the nuts and bolts of the same specification can be connected together. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts. (In the nut, M4 means that the inner diameter of the nut is about 4mm, and 0.7 means that the distance between the two threads is 0.7mm); the nut is the nut, which is screwed together with the bolt or screw for fastening. All A component that must be used in manufacturing machinery can be divided into carbon steel, stainless steel, and non-ferrous metals (such as copper) according to different materials.
by zhaozhi
The relationship between bolts and nuts
November 12, 2020 in Travels
The stud is the fastener used to match the nut. Nuts are parts that tightly connect mechanical equipment. The nut is a part that connects the mechanical equipment tightly. Through the inner thread, nuts and bolts of the same specification can be connected together. For example, M4-P0.7 nuts can only be connected with M4-P0.7 series bolts ( In the nut, M4 means that the inner diameter of the nut is about 4mm, and 0.7 means that the distance between the two thread teeth is 0.7mm); the nut is the nut, which is screwed together with the bolt or screw for fastening. All production A component that must be used in manufacturing machinery can be divided into carbon steel, stainless steel, and non-ferrous metals (such as copper) according to different materials.
Bolts: mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (cylinder with external thread), which needs to be matched with a nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If you unscrew the nut from the bolt, you can separate the two parts, so the bolt connection is a detachable connection
Bolt: a type of fastener consisting of two parts: head and screw (the dao screw in this zhi refers only to the threaded part, and the drive screw is not a concept at all). It needs to be matched with the nut for tightening Securely connect two parts with through holes.
Screws: A type of fasteners composed of two parts, the head and the screw, can be divided into three categories according to the purpose-machine screws, set screws, special purpose screws.
In addition, their fastening tools are different. Bolts generally use wrench tools, and screws generally use screwdriver tools; the fastening methods are different. Bolts are generally used in conjunction with nuts or screwed into the processed bolt holes, except for screws. These two methods also have self-tapping screws, which are directly screwed into a soft workpiece without processing bolt holes. For example, the wood screw we call is this kind of screw; the shape is different, and the head of the bolt is generally adapted The tools, such as hexagonal bolts and hexagon socket bolts, have their heads exposed outside the workpiece. To make the surface of the workpiece flat, it must be hollowed out. The hexagon socket bolts are used. The heads of the screws are generally flush with the surface of the workpiece. Those bolts that are not self-tapping should also be machined with a bevel on the surface of the workpiece, so that the screw head is flush with the surface of the workpiece.
