Knurled bolts are specialized fasteners characterized by their distinct surface texture, which features a series of ridges or grooves. This unique knurling not only enhances grip and handling during installation but also provides increased friction, thereby improving the bolt's ability to resist loosening under vibration or dynamic loads. Typically utilized in applications where manual adjustment is required, knurled bolts are often found in machinery, automotive components, and various assembly processes. Their design allows for easy tightening and loosening without the need for additional tools, making them a practical choice for both industrial and consumer applications.