Roll-threaded connecting bolts are indispensable in everyday life and industrial manufacturing, often referred to as the "rice of industry," highlighting their extensive application. Their usage spans across electronics, mechanical products, digital goods, electrical equipment, and electromechanical products. They are also employed in shipbuilding, vehicle manufacturing, hydraulic engineering, and even chemical experiments. Essentially, roll-threaded connecting bolts are used in countless places. Particularly, precision roll-threaded connecting bolts used in digital products, such as micro bolts for DVD players, cameras, eyewear, watches, and electronics; general roll-threaded bolts for televisions, electrical appliances, musical instruments, and furniture; and large roll-threaded bolts and nuts for engineering, construction, and bridges. For transportation devices, aircraft, trams, and cars, both small and large roll-threaded bolts are utilized. Roll-threaded connecting bolts play a crucial role in the industry, and as long as there is industry on Earth, their function will always be significant.