Nuts are used alongside bolts to secure components together. The nut’s internal threads allow it to fit onto the bolt’s shaft, creating a tight connection when tightened. There are several types of nuts, including hex nuts, lock nuts, and wing nuts. Lock nuts are designed to resist loosening under vibration, making them well-suited for applications in dynamic environments. Wing nuts, with their unique design, can be easily tightened or loosened by hand, making them useful in situations where frequent adjustments are necessary.