Highly corrosion resistant, good strength, sturdy, bright unplated tumbled finish and long lasting are some of the essential attributes of automotive studs available in the market. These are the mechanical fasteners that are normally supplied in weldable grades of metals like aluminum, copper, bronze, steel, iron, brass, nickel and other proprietary materials such as zinc chromate, plastic, nylon, fiber reinforced plastic, polyvinyl chloride, synthetic rubber and polyvinylidene fluoride. The standard size of studs range from diameters of 3/16??? to 5/8???. The market for automobile studs rally in China, Japan, USA, Hong Kong and Germany. Presently, this industry enjoys a total share of approximately US $104 million.