Screws

Screws are threaded fasteners designed to join or secure materials by being driven into them. They consist of a head, shank and a helical thread that transforms rotational torque into linear movement, generating a secure and tight fastening. Screws come in various types, sizes, and thread patterns to suit different materials and applications, such as wood, metal, or plastic. Their design allows for easy installation and removal while providing clamping force and resistance to loosening due to vibration.

The best material for screws depends on the application environment and mechanical requirements. Stainless steel (grades 304 and 316) is preferred for corrosion resistance and durability, especially in outdoor or marine environments. Carbon steel provides high strength and is economical for general applications but often needs protective coatings to resist corrosion. Alloy steel delivers enhanced strength and durability for demanding heavy duty uses. For lightweight or non conductive needs, materials like brass or nylon are ideal. Selecting the right material involves balancing mechanical strength, resistance to corrosion and overall cost effectiveness based on the application.

The primary purpose of a screw is to fasten two or more components securely by converting rotational torque into linear force through its threaded shaft. Screws create a mechanical bond that resists separation, distributes load and maintains structural integrity. They enable easy assembly and disassembly of parts, allow for precise clamping pressure and are widely used in construction, machinery, electronics and many other industries where reliable joining of materials is essential.