Threaded fittings are mechanical components used to connect pipes or tubes. They feature external or internal threads that allow for a secure connection, ensuring a tight seal to prevent leaks. These fittings come in various shapes, such as elbows, tees, and couplings, and are made from materials like steel, brass, or plastic. These fittings are commonly used in plumbing, gas, and hydraulic systems. The threaded design makes installation and disassembly easy, allowing for repairs or modifications without replacing entire sections of piping. Properly installed threaded fittings contribute to the overall efficiency and safety of fluid transport systems.