







The hexagonal bolt combination is a powerhouse of reliable connections! It typically comprises hexagonal bolts, nuts, and washers, all working harmoniously to deliver exceptional fastening strength and dependability. Here's an in-depth look:
1. Hexagonal Bolt: With a bolt head shaped into a perfect hexagon, it facilitates effortless use of tools like wrenches and sockets for seamless rotation, ensuring both tight fastening and easy disassembly. The screw part showcases external threads, distinguished into coarse and fine types based on application needs. Coarse threads excel in self-locking and strength; fine threads are ideal for thin-walled parts, impact vibrations, or anti-loosening requirements. Carbon steel hexagonal bolts, particularly of grade 4.8, are popular for general machinery and structural connections, while high-strength variants like grades 8.8, 10.9, and 12.9 cater to demanding requirements in bridges and heavy machinery. The stainless steel versions boast outstanding corrosion resistance, perfect for chemical industries, food machinery, outdoor setups, and more.
2. Nut: Working in tandem with hexagonal bolts, these nuts feature internal threads that flawlessly match the bolt's external threads, allowing for a secure clamp by simply rotating the nut. Types include standard nuts, thin nuts, and thick nuts. Standard nuts fit most conventional needs; thin nuts are tailored for tight spaces; thick nuts offer enhanced load-bearing and anti-loosening prowess, perfect for high-vibration scenarios. Special nuts like nylon lock nuts and all-metal lock nuts incorporate unique structures or materials to boost friction, preventing loosening in vibrating or impact-rich environments.
3. Washers: Flat washers and spring washers are the primary types. Flat washers sit snugly between the nut or bolt head and the connected part, broadening the contact area, dispersing pressure, and safeguarding the surface from excessive local pressure damage. They also prevent electrochemical corrosion between dissimilar materials. Spring washers utilize the rebound force from their elastic deformation, enhancing friction between nuts and bolts to avert loosening, especially vital in vibrational or dynamic load scenarios.
Hexagonal bolt combinations, with their robust bolt-generated fastening force, ensure secure threaded connections via nuts, while washers fortify stability and safeguard components. Their versatile applications span diverse fields such as construction engineering, automotive manufacturing, aerospace, and mechanical equipment installation.