Flange bolts, also known as hexagonal flange bolts, are a special type of bolts consisting of a hexagonal head, a flange and a screw with external threads. Its design structure includes a hexagonal head and a flange located below the hexagonal head. It is usually used in conjunction with a nut to fasten two parts with through holes.

The ratio of the support area to the stress area of the flange bolt is large: this allows the flange bolt to withstand higher preloads and has better anti-loosening performance.

Due to its unique structure and function, flange bolts are widely used in automotive engines, heavy machinery and other fields that require high preloads and excellent anti-loosening performance. Understanding the standards, specifications and material selection of flange bolts is essential to ensure the stability and reliability of the connection.