Fasteners, specifically bolts, nuts, and washers, are vital in construction and manufacturing industries. Bolts are externally threaded anchors used with a nut to join components. Nuts provide the clamping force for their bolt counterparts. Washers protect the surface and help prevent loosening due to vibration. Understanding the diverse types, uses, and selection of these fasteners is crucial for integrity, safety, and longevity of structures. Proper selection, application, installation, and maintenance practices alongside material and grade considerations are pivotal in the successful use of these components.