Welcome to our comprehensive guide on flange head bolts in China, a critical component in various industries, including construction, automotive, and manufacturing. Understanding these fasteners is essential for engineers, manufacturers, and quality control professionals who aim to ensure structural integrity and reliability in their projects.

In this guide, readers will explore the unique features of flange head bolts, their advantages over traditional bolts, and their applications in diverse settings. We will also delve into the manufacturing processes and standards prevalent in China, a global leader in fastener production.

Additionally, this resource will provide insights into selecting the right flange head bolt for specific applications, including material considerations, sizing, and compatibility. By the end of this guide, you will have a deeper understanding of flange head bolts and their pivotal role in modern engineering practices.

The Comprehensive Guide to Flange Head Bolts in China

Flange head bolts are a crucial type of fastener, widely used in various industries, including automotive, construction, and machinery. Their design incorporates a built-in flange that distributes load and enhances stability. This guide delves into the technical features, types, and applications of flange head bolts, highlighting manufacturers and suppliers in China.

Understanding Flange Head Bolts

Flange head bolts are designed to provide a secure connection between components, where load distribution and resistance to rotation are essential. They feature a flat, wide disc-like extension under the head, which acts as a washer. This design minimizes damage to surfaces and prevents the bolt from sinking into the material. Flange bolts simplify assembly by eliminating the need for separate washers, providing a more stable and secure connection.

Technical Features of Flange Head Bolts

Here’s a comparison of the technical features of flange head bolts:

Feature	Description
Size and Length	Metric: M5-M36; Imperial: #10″ to 1-1/2″
Thread Type and Pitch	Metric: Up to 800mm; Imperial: Up to 30″
Material	Carbon steel, stainless steel (304 or 316), alloy steel, brass, etc.
Head Type	Flange Head
Finish and Coating	Black Oxide Coating, Zinc Plating, Hot-Dip Galvanizing, etc.
Industry Standards	ISO, ASTM, ASME, DIN, UNI, JIS
Packaging	Boxes/cartons into wooden pallets
Applications	Construction, Agricultural Machinery, Industrial Structures, etc.

Types of Flange Head Bolts

Flange head bolts come in various types, each suitable for specific applications. Below is a comparison of different types:

Type	Description	Common Standards
Hex Flange Bolts	Standard bolts with a hexagonal head and flange; used in machinery.	DIN 6921
Serrated Flange Bolts	Feature serrations to prevent loosening; ideal for vibration-prone areas.	DIN 6916
Hex Flange Head Screws	Combine a hex head with a flange; versatile for various applications.	ANSI/ASME B18.2.1
T-Bolts	Have a T-shaped head; used in tracks and rails for secure fastening.	Custom
Heavy Hex Flange Bolts	Thicker and stronger; used in heavy-duty applications like bridges.	ASTM A325

These bolts are commonly produced by reputable manufacturers in China such as Ningbo Teng Qi Fasteners Co., Ltd, Jiaxing Aoke Trading Co., Ltd, and Jiangyin Xianggu Hardware Products Co., Ltd.

Applications of Flange Head Bolts

Flange head bolts are widely used across various sectors. In automotive applications, they provide secure connections that withstand vibrations. In construction, they are essential for joining structural components without compromising surface integrity. Their resistance to loosening makes them ideal for machinery and equipment assembly.

Quality Control in Manufacturing

Manufacturers like Ningbo Teng Qi Fasteners implement rigorous quality control processes. This includes material inspection, process control, and sampling tests to ensure that every bolt meets industry standards. Quality assurance is critical for maintaining the reliability and safety of flange head bolts.

Conclusion

Flange head bolts are indispensable components in numerous industries due to their unique design and functionality. They offer significant advantages over traditional bolts, including enhanced load distribution and ease of assembly. With various types available, manufacturers in China provide a wide range of options tailored to meet specific application needs. Companies like Jiaxing Aoke Trading, Jiangyin Xianggu Hardware, and Shenzhen Liying Hardware continue to innovate in the fastener market, ensuring high-quality products for global distribution.