In fasteners, a "stud" is a rod-shaped part with threads on both ends. It is typically used where one end is fixed to a component and the other end is tightened with a nut. Studs are preferred in engines, machinery, and structural assemblies where high tension and tight connections are required.

In fasteners, a "nut" is a piece designed to fit the threads of screws and is used to hold together two or more parts tightly. Nuts usually work with bolts or studs, providing a strong connection through their threaded structure. Different types of nuts (hexagonal, flanged, wing, etc.) are produced for various applications.

In fastening components, a "bolt" is a threaded element primarily used in applications requiring high strength, providing a secure hold when tightened with a nut. Bolts are designed to join two or more parts securely, offering stability in various settings. Produced in different sizes, lengths, and materials (such as hex bolts, eye bolts, U-bolts), bolts are widely used in industries like construction, automotive, and machinery assembly. Their strong hold enhances the durability of structures and systems.

A "screw" is a versatile threaded fastener that can be securely attached to various surfaces without needing a nut. Screws are ideal for fastening materials like wood, metal, plastic, and more. Available in various head types (flat, Phillips, hex, etc.) and tip shapes (sharp, blunt, etc.), screws are used in furniture assembly, electronics, home applications, and more to create solid, reliable connections.