What Are Flange Bolts?

Flange bolts, also known as frame bolts, are a type of fastener designed to provide more holding power compared to a standard bolt or screw. They are characterized by having a flange or an integrated washer-like structure under the head of the bolt. This flange helps to distribute the load over a larger area, providing a more secure and tight hold.

Flange Bolts

Features And Uses Of Flange Bolts

Here are some key features and uses of flange bolts:

Integrated Flange: The built-in flange acts like a washer, distributing pressure over a wider surface area and reducing the risk of damage to the secured part. This is especially useful in applications where the surface cannot tolerate high localized pressures.

Design Varieties: Flange bolts can come with either a serrated or plain flange. Serrated flanges help to resist vibration and rotation by biting into the material, which is particularly useful in applications subject to high vibration. The plain flange types are typically used where surface damage is a concern or where the bolt needs to be easily removed.

Material and Grades: Like other bolts, flange bolts are made from various materials, including carbon steel, stainless steel, and alloys, with strength grades that determine their load-bearing capacity. The choice depends on the environmental conditions and the mechanical requirements of the application.

Applications: Flange bolts are used in a variety of industries, including automotive, plumbing, and construction. In the automotive industry, for instance, they are often used to attach parts like brackets and flanges in engine and chassis assemblies because their flange provides good resistance against loosening from vibrations.

Standardization: Flange bolts are typically standardized, with common standards including DIN (Deutsches Institut für Normung in Germany) and ANSI (American National Standards Institute in the USA). This standardization helps ensure compatibility and reliability across different applications and industries.

Ease of Use: Including the flange means there is no need for a separate washer, which simplifies assembly operations and can speed up installation processes.

Flange bolts are thus a versatile and reliable choice for securing components in applications requiring a robust connection, particularly where vibration is a concern.

Why Choose Xinchi Fastener Factory

Xinchi Fastener Factory is a professional manufacturer of industrial fasteners, including a full range of flange bolts in carbon steel and stainless steel materials. We have a factory that was founded in 2007.

• Large-scale production capacity: 102 cold-heading machines with a daily output of over 10 million pieces
• Modern facilities: New factory covering 30,000 square meters, two buildings with six floors each
• Strict quality control: Ensuring stable performance from raw materials to finished products
• Flexible customization: Different lengths, diameters, and thread specifications available
• Direct factory supply: Transparent pricing without middlemen
• Professional support: Fast response for bulk orders, distributors, and project sourcing

We are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier, Xinchi offers a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, and washers. Our products are widely used in automotive, machinery, construction, electronics, and furniture industries, trusted by global customers for stability, precision, and durability.

If you want to learn more about fasteners or purchase them wholesale, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.