While not fasteners in the traditional sense, washers are often used in conjunction with bolts, nuts, and screws to improve their performance. Washers distribute the load of the fastener over a larger surface area, helping to prevent damage to the material being fastened and reducing the risk of loosening due to vibration. There are several types of washers, including flat washers, lock washers, and fender washers, each serving specific functions in various applications.

4. Corrosion Resistance Mechanical fasteners often create points of vulnerability where corrosion can occur, especially when dissimilar materials are joined. Bonded fasteners provide a continuous seal that can prevent moisture intrusion, thereby reducing the risk of corrosion and extending the lifespan of the assembly.

Self-drilling metal screws are essential fasteners widely used in construction, manufacturing, and automotive industries. Their unique design allows them to create their own hole in the material they're being driven into, eliminating the need for pre-drilling. This feature not only saves time but also enhances efficiency, making them a preferred choice for various applications.