2025-09-09
When it comes to mechanical assemblies, construction work, or heavy-duty industrial applications, the choice of fasteners is critical. Among the many options available, Hex Head Flange Bolts stand out due to their unique combination of strength, stability, and convenience. These bolts combine a traditional hexagonal head with a built-in flange, eliminating the need for a separate washer in most applications.
As a leading manufacturer in China, Hebei Dongshao Fastener Manufacturing Co., Ltd. specializes in producing high-quality Hex Head Flange Bolts for both domestic and international markets. In this article, we will explore the product parameters, applications, advantages, and frequently asked questions to help you understand why Hex Head Flange Bolts are the ideal choice for your next project.
A Hex Head Flange Bolt is a fastening device that features a hexagonal head and an integrated flange base. The flange acts like a built-in washer, providing a larger bearing surface. This design helps distribute load more evenly, reduces the risk of loosening, and increases the overall strength of the connection.
These bolts are widely used in industries such as:
Automotive manufacturing
Heavy machinery
Construction and infrastructure
Shipbuilding
Agricultural equipment
Hexagonal Head – Provides excellent grip for torque application with wrenches or sockets.
Built-in Flange – Eliminates the need for a separate washer, saving time and cost.
Uniform Load Distribution – Reduces the risk of damage to surfaces under pressure.
High Strength – Manufactured with robust materials like carbon steel, alloy steel, and stainless steel.
Corrosion Resistance – Available with various coatings such as zinc plating, black oxide, or hot-dip galvanizing.
At Hebei Dongshao Fastener Manufacturing Co., Ltd., we produce Hex Head Flange Bolts according to international standards such as DIN, ISO, ASTM, and JIS. Below is a simplified parameter table:
Parameter | Specification Range |
---|---|
Size Range (Diameter) | M6 – M30 (¼" – 1 ¼") |
Length | 10mm – 300mm (⅜" – 12") |
Material | Carbon Steel, Alloy Steel, Stainless Steel |
Grade/Class | 4.8, 8.8, 10.9, 12.9 |
Surface Finish | Zinc Plated, Black Oxide, Hot Dip Galvanized |
Standard | DIN 6921, ISO 4162, ASTM A325, JIS B1189 |
Thread Type | Metric Coarse, Metric Fine, UNC, UNF |
The importance of using high-quality Hex Head Flange Bolts cannot be overstated. Their role includes:
Enhanced Load Bearing – The flange spreads the clamping force, reducing stress concentration.
Improved Safety – Bolts are less likely to loosen due to vibration, which is essential in automotive and machinery applications.
Time-Saving Assembly – Fewer components are needed since the washer function is integrated.
Cost Efficiency – Less hardware required means reduced purchasing and inventory management costs.
Hex Head Flange Bolts are versatile and suitable for numerous applications. Some of the most common include:
Automotive Industry – Used in engine parts, chassis connections, and body assemblies.
Construction Projects – Ideal for steel structures, beams, and heavy connections.
Machinery and Equipment – Widely used in manufacturing equipment, conveyors, and industrial machines.
Agricultural Equipment – Reliable fastening in tractors, harvesters, and other farm machinery.
Shipbuilding and Marine Engineering – Provides corrosion resistance and durability in harsh environments.
Strict Quality Control – Every batch undergoes dimensional checks, tensile strength testing, and surface treatment inspections.
Wide Range of Options – From M6 to M30, with multiple grades and coatings.
Customization Available – Tailor-made solutions for specific industrial requirements.
Compliance with International Standards – Products meet DIN, ISO, ASTM, and JIS specifications.
Global Supply Capability – Exporting to markets across Europe, America, and Asia.
Reduced installation time
Long service life due to high strength and corrosion resistance
Lower maintenance cost
Improved reliability in high-vibration environments
Easy availability in both metric and inch sizes
Q1: What makes Hex Head Flange Bolts different from regular hex bolts?
A1: The main difference is the integrated flange under the head. While regular hex bolts require a separate washer to distribute the load, Hex Head Flange Bolts eliminate this need. This design ensures better load distribution, reduces vibration loosening, and saves assembly time.
Q2: Which materials are best for Hex Head Flange Bolts in outdoor environments?
A2: For outdoor applications, stainless steel or hot-dip galvanized carbon steel is recommended. These materials provide excellent resistance to corrosion and rust, making them suitable for marine, construction, and agricultural settings.
Q3: Can Hex Head Flange Bolts handle high-torque applications?
A3: Yes, they are specifically designed for high-torque and high-load applications. With strength grades up to 12.9, they are suitable for demanding industries such as automotive manufacturing and heavy machinery.
Q4: How do I choose the correct size of Hex Head Flange Bolt for my project?
A4: The correct size depends on factors such as load requirements, hole diameter, and material thickness. Consulting the technical specification table provided by the manufacturer, like Hebei Dongshao Fastener Manufacturing Co., Ltd., ensures that you select the proper bolt for optimal performance.
In today's demanding industrial and construction environments, choosing the right fastener can determine the success or failure of a project. Hex Head Flange Bolts offer a combination of strength, durability, and convenience that makes them one of the most reliable fasteners available.
With a complete range of specifications, strict quality control, and compliance with international standards, Hebei Dongshao Fastener Manufacturing Co., Ltd. ensures that customers receive products they can trust. Whether you are in the automotive, construction, machinery, or shipbuilding industry, Hex Head Flange Bolts are an excellent choice to enhance performance and reliability.
For inquiries, specifications, or bulk orders, please contact Hebei Dongshao Fastener