The bolt has good toughness, is not easily brittle, and can maintain stable fastening performance under shock and vibration. Bolts can withstand large tensile and compressive forces, ensuring structural stability and safety. Bolts can resist separation and relative slippage caused by external forces on the connected parts to a certain extent. The bolt is detachable, which facilitates the replacement and maintenance of parts, as well as the disassembly and transportation of equipment, and promotes cost and resource savings. Bolts are widely used in automation equipment, electronic products, machinery, electricity, ships, vehicles, water conservancy engineering, etc.