How Does a Flange Bolt Work? A Simple Guide

How Does a Flange Bolt Work? A Simple Guide

Postview: 2 views     Date: July 16, 2026

Flange bolts are commonly used fasteners that combine a bolt and washer into one design. With a built-in flange under the head, flange bolts can provide better load distribution and more stable fastening compared with standard bolts.

As a professional flange bolt manufacturer, Xinchi Fastener Factory will introduce the basic structure, working principle, and advantages of flange bolts in this article.

Flange Bolts

Flange Bolts

Flange Bolt Structure

The design of a flange bolt is simple but effective. Unlike regular hex bolts that require an additional washer, a flange bolt has an integrated flange at the bottom of the head.

The main parts include the hexagonal head, flange base, and threaded shaft. The hex head allows easy tightening with tools, while the flange increases the contact area between the bolt and the fastening surface.

Flange Bolts

Flange Bolts

How Flange Bolts Work

The working principle of a flange bolt is based on creating a strong clamping force between connected parts. When the bolt is tightened, the threads generate tension to hold the components together.

The built-in flange helps spread the pressure over a larger area, reducing surface damage and improving connection stability. This makes flange bolts suitable for applications where vibration resistance and reliable fastening are important.

Flange Bolts

Flange Bolts

Advantages of Flange Bolts

Flange bolts provide several benefits that make them widely used in industrial applications.

The integrated flange design eliminates the need for a separate washer, making assembly faster and reducing the number of components. In addition, the larger bearing surface helps improve load distribution and maintain a secure connection.

Because of these advantages, hex flange bolts are often selected for automotive, machinery, and equipment manufacturing.

Flange Bolts

Flange Bolts

Common Applications of Flange Bolts

Flange bolts are used in many industries where strong and efficient fastening solutions are required.

Common applications include automotive parts, mechanical equipment, steel structures, and industrial assembly. Different projects may require different sizes, materials, thread specifications, and surface treatments to meet specific requirements.

Choose a Reliable Flange Bolt Manufacturer

Choosing a reliable flange bolt supplier is important for ensuring consistent product quality and stable delivery. A professional manufacturer should have advanced production equipment, strict quality control, and the ability to support customized requirements.

Established in 2007, Xinchi Fastener Factory is a professional fastener manufacturer with strong production capabilities. The factory has 102 cold heading machines and a daily production capacity of more than 10 million pieces. The completed new factory covers an area of 30,000 square meters, including two six-story buildings.

Xinchi Fastener Factory

Xinchi Fastener Factory

With years of manufacturing experience and stable production capacity, Xinchi Fastener Factory provides high-quality flange bolts and other fasteners, including nutsscrewsboltsrivetsand washers for customers worldwide.