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.

Here are some key features and uses of flange bolts:

Integrated Flange: The built-in flange acts like a washer to distribute pressure over a wider surface area, thus 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.

Xinchi is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007(Factory Video). And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  Xinchi can offer a wide range of high-quality fasteners, including T nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.