Jiangxin Time: Understand how the shape of the bolt head affects the performance and safety

Cylindrical head bolt

Features: The head of the cylindrical head bolt is cylindrical, with a smooth surface and good force-bearing performance. Usually in structural design, cylindrical head bolts are used in situations where there are high requirements for the appearance of the head and ease of operation.

Application scenarios: Cylindrical head bolts are commonly found in mechanical equipment, electronic products, and mold manufacturing, and are suitable for situations that require higher torque. Its smooth head is easy to tighten with a wrench or power tool, and is very suitable for applications with small space but high-precision operation.

Safety and use effect: The design of the cylindrical head ensures that the head will not deform easily under high load, ensuring the tightening force of the bolt and the stability of the connection. Bolts of this shape can withstand greater shear force, making the connection more secure.

Flat round head bolt

Features: The head of the flat round head bolt is arc-shaped, relatively flat, and beautiful in appearance. It is usually used in exposed structures or products. Its head is large, which can provide a larger force-bearing area for the connection part.

Application scenarios: Flat round head bolts are mostly used in occasions with high decorative requirements, such as furniture, light industry and the external structure of some mechanical equipment. Its arc-shaped head has a simple appearance and is particularly suitable for exposed connection parts.

Safety and use effect: Due to the large force-bearing area of ​​the head of the flat round head bolt, it can avoid large pressure concentration during installation and effectively reduce the damage of the bolt to the installation surface. Its head is low, which can avoid external scratches and improve the safety of the overall structure.

Flat round head bolt

Features: The head of the flat round head bolt is arc-shaped, relatively flat, and beautiful in appearance. It is usually used in exposed structures or products. Its head is large, which can provide a larger force-bearing area for the connection part.

Application scenarios: Flat round head bolts are mostly used in occasions with high decorative requirements, such as furniture, light industry and the external structure of some mechanical equipment. Its arc-shaped head has a simple appearance and is particularly suitable for exposed connection parts.

Safety and use effect: Due to the large force-bearing area of ​​the head of the flat round head bolt, it can avoid large pressure concentration during installation and effectively reduce the damage of the bolt to the installation surface. Its head is low, which can avoid external scratches and improve the safety of the overall structure.

Countersunk Bolts

Features: The head of the countersunk bolt is designed to be flat or slightly concave, so that the bolt can be completely embedded in the surface of the workpiece. After installation, it is flush with the surface of the workpiece without any protruding parts.

Application scenarios: Countersunk bolts are often used in situations where smooth surfaces are required, such as aircraft, building curtain walls, furniture and mechanical equipment. Since the countersunk bolt does not protrude from the surface after installation, it is widely used in applications that require high aesthetics and cannot have any protrusions, such as wood or metal structure connections.

Safety and use effect: Countersunk bolts can ensure the smoothness of the connection surface, avoid scratches or friction caused by surface protrusions, and improve the overall safety of the structure. Since the head is embedded in the material, the stability of the connection is further guaranteed. In addition, countersunk bolts perform well in high-strength applications, providing strong tightening force and reducing the risk of loosening.

Pan head bolt

Features: The head of the pan head bolt is flat and slightly raised, presenting a "plate" shape. Compared with the flat round head, the head of the pan head bolt is slightly thicker and can provide greater tightening force.

Application scenarios: Pan head bolts are widely used in electronic products, furniture assembly and mechanical structures, especially in those occasions where high-strength tightening is required but the bolt head is not expected to be too protruding. For example, pan head bolts are very common in some metal sheet connections or plastic parts assembly.

Safety and use effect: The pan head bolt has a large head contact surface, which can disperse the pressure applied to the bolt and prevent the material from being crushed by the bolt head. Its flat head can reduce the bulge to avoid affecting the external design or personnel safety.

Importance of choosing bolt head shape

Bolt heads of different shapes directly affect the force-bearing mode, installation method and appearance of the bolt. Correctly choosing the bolt head shape can not only improve the firmness of the connection parts, but also improve the safety and durability of the entire structure.

Usage effect: By choosing the appropriate bolt head shape according to the specific scenario, you can ensure the best fastening effect and aesthetics during use.

Safety: Choosing the right head shape can effectively reduce safety hazards, such as reducing the risk of surface protrusions and improving the stability of the connection.