Fasteners are essential components used to join or secure two or more objects together. They come in various forms, including bolts, screws, nuts, and washers, each designed for specific applications. Fasteners are widely used in construction, manufacturing, and everyday items, ensuring stability and safety in structures and products. The choice of fastener depends on factors such as material, load requirements, and environmental conditions. Proper selection and installation of fasteners are crucial for the integrity of assemblies, making them a vital aspect of engineering and design. Understanding the different types of fasteners can help in making informed decisions for any project.