Functions of Fasteners

‌1. Connection: The primary function of fasteners is connection; they secure different components together-using bolts, nuts, screws, etc.-to form an integrated structure. This method of connection offers high flexibility, facilitating easy disassembly and maintenance.

‌2. Load Transfer: Fasteners transmit forces and moments between components, ensuring even load distribution during the operation of mechanical systems and preventing damage caused by localized overloading. For instance, in structural engineering, anchor bolts secure steel structures to foundations, transferring wind loads and seismic forces.

‌3. Sealing: Certain fasteners (such as sealing bolts) provide a sealing function, preventing the leakage of liquids or gases. This is particularly critical in pipeline connections and pressure vessels.

‌4. Positioning: Fasteners can be used to precisely fix the location of components, ensuring assembly accuracy. In machining, for example, locating pins are used to maintain the relative positioning of parts.

‌5. Anti-loosening: Some fasteners (such as locking nuts and spring washers) are designed to prevent loosening caused by vibration or impact, ensuring the long-term reliability of the connection.

‌6. Aesthetics: In the manufacturing of consumer goods and furniture, fasteners are also used to enhance the product's visual neatness by concealing connection points.

‌7. Rapid Assembly/Disassembly: Specially designed fasteners (such as quick-release pins) enable rapid assembly and disassembly, thereby improving maintenance efficiency.