What are the different types of screw nuts and how are they used in various applications?

There are several types of screw nuts, including hex nuts, wing nuts, and lock nuts. These nuts are used in various applications to secure bolts or screws in place. Hex nuts are the most common type and are tightened with a wrench. Wing nuts are easy to tighten by hand and are often used in applications where frequent adjustments are needed. Lock nuts have a built-in mechanism to prevent loosening due to vibrations or other factors. Each type of nut is chosen based on the specific requirements of the application to ensure a secure and reliable connection.