Products Description
Our flange bolts are essential fasteners for various industrial applications. Manufactured from high - quality carbon steel or stainless steel, they offer excellent strength and corrosion resistance.
Featuring precise threading, these bolts ensure a secure and tight connection between flanges. Their standardized dimensions meet international standards, making them highly interchangeable. The hexagonal head design allows for easy installation and removal using common tools.
Whether it's in pipeline systems, machinery manufacturing, or construction projects, our flange bolts provide reliable performance. They are rigorously tested to guarantee quality and durability, ensuring long - term usage without loosening or failure, and are your ideal choice for demanding fastening task.
Products Parameter
|
Name |
Hexagonal Flange bolts |
|
Material |
carbon steel,Stainless Steel and alloy steel,etc. |
|
Standard |
DIN 6921 |
|
Certificate |
ISO 4162 |
|
Grade |
Grade 4.8, Grade 6.8, Grade 8.8 , Grade 10.9 |
|
Nominal diameter |
M4-M36 |
|
Surface treatment |
PLAIN BLACK ZINC |
Product feature and application
Product feature
Connection fastening
Provides strong clamping force to ensure tight flange connection, effectively preventing medium leakage in pipelines or equipment, and ensuring safe and stable system operation.
01
Easy operation
Simply pass the bolt through the flange hole and tighten the nut. The operation is simple, saving installation time and labor costs.
02
Various specifications
Available in various specifications and materials, suitable for pipeline systems with different pressures, temperatures, and media, such as chemical, petroleum, power, water supply and drainage, etc.
03
Simple structure
High standardization allows flange bolts of the same specification to be interchangeable, facilitating maintenance and replacement.
04
Reliable anti-loosening
Generally made of high-strength steel, capable of withstanding large tensile and shear forces to meet the connection requirements of various engineering structures.
05
Product application
Mechanical manufacturing
Hexagonal flange bolts are vital in heavy machinery such as excavators and mining equipment, where their anti-vibration flange design secures the frame and transmission components. In agricultural machinery, they stabilise engine components and suspension systems against bumps. In industrial automation, their flat contact surfaces reduce mounting errors in robot joints and conveyor belt supports.
01
Automobile industry
In vehicles, they fasten chassis suspensions, engine blocks, and wheel hubs, with the flange preventing loosening from dynamic loads. Commercial trucks use them for frame-box connections, while their high load capacity suits axle fixing. In rail transit, they ensure stable links in high-speed train carriages and power units.
02
Construction field
In steel structures, they join beams and trusses, distributing pressure effectively for durability in vibrating environments like factory cranes. For building curtain walls, they connect keels without damaging panels. Bridges employ them in supports and expansion joints, resisting vehicle and environmental loads.
03
Electronic
In telecom base stations, they secure antenna brackets against wind vibration. For server cabinets and power distribution boxes, the flange avoids scratching cables, ensuring neat installations. Their anti-loosening feature keeps equipment stable in long-term operation.
04
Daily necessitie
Outdoor fixtures like streetlight bases and billboards use them with anti-loosening adhesives to withstand weather. In household appliances, stainless steel hex flange bolts fit kitchen equipment or bathroom fixtures, combining corrosion resistance with easy installation.
05
Prodection Details
Different materials and features
Here you can learn more and choose the product that suits you best!
Carbon steel
Material: Iron-carbon alloy with a carbon content between 0.0218% and 2.11%, often added with elements such as manganese and silicon.
Characteristics: High strength and hardness, capable of withstanding large tensile and compressive forces, good toughness, excellent machinability, and relatively low cost, making it widely used. However, it is prone to rust in special environments such as humid or acidic/alkaline corrosive conditions.
Stainless Steel
Material: Alloy steel containing elements like chromium and nickel, with common grades such as SS201, SS304, SS316, and SS316L.
Characteristics: Excellent corrosion resistance, oxidation resistance, and acid resistance, maintaining good performance in harsh environments. It has an attractive appearance and requires no additional anti-corrosion treatment. However, stainless steel bolts have slightly lower strength than carbon steel bolts and higher costs.
Alloy Steel
Material: Carbon steel base with one or more alloying elements added, such as chromium, molybdenum, and vanadium.
Characteristics: High strength, high toughness, and good wear resistance, able to withstand higher loads and more complex working conditions. They also have better high-temperature resistance and fatigue resistance, but come at a relatively higher price.
Copper and Copper Alloys
Material: Mainly pure copper, brass, bronze, etc.
Characteristics: Good electrical and thermal conductivity, corrosion resistance, and plasticity, easy to process and form. Copper hex bolts have unique advantages in special applications such as electrical equipment and food processing equipment. However, copper has relatively low strength and high cost.
Surface Finishing
Here you can learn more and choose the product that suits you best!
Plain
Maintain the original characteristics: no additional surface treatment, retaining the original strength, hardness and other mechanical properties of alloy steel, the material characteristics are fully displayed.
Natural appearance: presents the original metallic color and texture of alloy steel, simple and natural, suitable for applications that do not require high appearance and need to reflect the essence of the material.
Easy to corrode: directly exposed to the air, easy to react with oxygen, moisture, etc. and rust, poor corrosion resistance, short service life in harsh environments.
Black
Enhanced corrosion resistance: A black oxide film is formed on the surface through chemical treatment, which can isolate air and moisture to a certain extent and slow down the corrosion rate.
Unique appearance: the surface is black, uniform color, with a unique texture, increasing the aesthetics of the product, commonly used in mechanical parts that have certain requirements on appearance.
Lower cost: the blackening process is relatively simple, the cost is not high, and it can improve the protective performance and appearance quality of bolts to a certain extent, with high cost performance.
Electro-galvanizing
Better protective performance: the zinc layer is uniform and dense, which can effectively block the external corrosive medium from contacting with the bolt substrate, and has a good protective effect on the iron and steel substrate.
Beautiful appearance: the surface is smooth, flat, silver-white or bluish-white, with good decorative properties, which can satisfy some occasions with higher requirements on appearance quality.
Controllable thickness: The thickness of the zinc layer can be precisely controlled by controlling the parameters of the electroplating process to meet different protection requirements.
Hot-dip galvanizing
Strong corrosion resistance: The thickness of the zinc layer is large, usually between tens and hundreds of microns, which provides strong corrosion resistance and is suitable for harsh environments such as outdoor, humid, acid and alkali environments.
Long service life: Because the zinc layer is thick and firmly combined with the substrate, it can effectively protect the bolt substrate for a long period of time, which greatly prolongs the service life of the bolt.
Good workmanship: hot-dip galvanizing is carried out at high temperatures, the zinc liquid can fully penetrate into all parts of the bolt, including threads, crevices, etc.
Bolt Grade
Here you can learn more and choose the product that suits you best!
Grade 4.8
Grade 4.8 is mostly made of low carbon steel, which is suitable for occasions with low strength requirements, such as ordinary furniture assembly, general mechanical connection, and is also commonly used in some non-load-bearing structural parts in buildings.
Grade 8.8
Grade 8.8 multi-purpose medium carbon steel and after heat treatment and tempering, often used in automobile manufacturing, key parts of machinery and construction industry has a certain strength of the steel structure connection node.
Grade 10.9
Grade 10.9 is often used for steel structure connection in bridge construction, which can withstand large loads; It is also more common in the connection of key parts of large machinery and equipment, such as mining machinery, port cranes, etc., to ensure the reliability of equipment under high intensity working conditions.
Grade 12.9
Grade 12.9 is mainly used in the aerospace field, such as the connection of key components such as aircraft engines and landing gear, requiring bolts and nuts to have extremely high strength and reliability; Grade 12.9 is also used in some high-end precision machinery manufacturing to ensure the high precision and stability of the equipment.
(Mainly show carbon steel bolt grade)
About us
Company Profile
Certifications
Factory Environment
Packaging
Exhibition
FAQ
Hot Tags: Hex Flange Bolt DIN6921 Grade 10.9, China Hex Flange Bolt DIN6921 Grade 10.9 manufacturers, suppliers, factory
