1. Connection function
Screws are a type of connector that is usually used to connect two or more objects tightly together. Since screws have certain tensile strength and shear strength, they can ensure the firmness of the connection and prevent objects from loosening or falling off. Screws are widely used in machinery manufacturing, electronic appliances, building decoration and other fields, such as assembly, installation, fixing glass, wood, etc.
2. Fixing function
Screws can also be used as fixings to fix some small parts, accessories or surface materials, such as fixing wires and cables, fixing switches and sockets, etc. In addition, for some occasions that require high-strength fixing or sealing, there are special screws, such as galvanized screws, stainless steel screws and waterproof screws.

3. Support function
Screws can also be used to support structures or accessories, such as connecting steel structures, building supports, bridge supports, car chassis, train connection supports, etc. These occasions require screws to have characteristics such as high strength and corrosion resistance to ensure the safety and durability of the structure.
In short, screws, as a simple and common fastener, have important functions such as connection, fixing and support, and have been widely used in various fields. When choosing screws, you need to select appropriate materials, models and specifications according to specific needs to ensure the firmness and reliability of the fasteners.

