Nuts are essential fasteners widely used in MRO and automation industries for securing bolts and threaded rods. They come in various types such as hex nuts (standard or heavy-duty), lock nuts (nylon insert or all-metal), wing nuts (hand-tightening), flange nuts (integrated washer), and cap nuts (aesthetic finish). Key features include material options (steel, stainless steel, brass), corrosion resistance coatings (zinc, hot-dip galvanized), and thread specifications (metric/imperial). Common applications include machinery assembly, electrical enclosures, conveyor systems, and robotic components. Specialty variants like prevailing torque nuts provide vibration resistance in high-motion environments.