Bolt head shapes mainly include hexagonal heads, round heads, square heads, and countersunk heads. These are the most common designs in mechanical connections, and each head type has its specific application scenarios and advantages.
Hexagonal head:The most common and widely used. Its six facets facilitate the application of large torque using a wrench or socket, and it offers strong stability. It is widely used in construction, machinery, and automotive industries.
Round head: The head is hemispherical with a smooth appearance. It is often used in situations requiring a certain aesthetic appeal or manual installation. It can also be screwed into the part to reduce protrusion.
Square head: It has a larger bearing area and can withstand higher tightening torque. It is often used in rougher structures or T-slots, facilitating position adjustment, but it is larger in size.
Countersunk head: Designed with a conical or flat bottom, it can be completely embedded in the countersunk hole of the connected parts, achieving a flat surface. It is suitable for connections where smoothness is required, such as woodworking or panel fixing.
