External serrated flange bolts have various application areas where their unique design and features can be advantageous：

1. Automotive industry: These bolts are commonly used in automotive applications, especially in engine components, exhaust systems, and suspension parts. The serrated flange helps to provide a secure and tight connection, preventing loosening due to vibrations.

2. Industrial machinery: External serrated flange bolts are often employed in heavy machinery and equipment, such as construction machinery, agricultural equipment, and manufacturing machinery. They help ensure the stability and integrity of the machine by preventing bolt loosening under high loads and vibrations.

3. Aerospace industry: In the aerospace sector, where safety and reliability are paramount, external serrated flange bolts find applications in aircraft assembly and maintenance. They are used in critical areas like wing structures, landing gear, and engine mounts, where the serrated flange provides added resistance against loosening and enhances structural integrity.

4. Infrastructure and construction: These bolts are suitable for various construction projects, including bridges, buildings, and infrastructure installations. Their serrated flange helps maintain the structural integrity of joints and connections, even in environments prone to vibrations, such as bridges and high-rise buildings.

5. Power generation: External serrated flange bolts are used in power plants, including thermal, hydroelectric, and nuclear power facilities. They are employed in turbine assemblies, piping systems, and equipment mounting, where their serrated flange design helps prevent bolt loosening caused by vibrations and thermal cycling.

6. Oil and gas industry: In the oil and gas sector, external serrated flange bolts are utilized in pipelines, refineries, and offshore platforms. They provide a reliable and secure connection in critical areas, ensuring the safety and integrity of the infrastructure.