Perfect for use in confined areas as fixing component, industrial and construction fasteners. There are many different length of button head screws that you can use for various purposes. Total 540 pieces screws and 480 pieces nuts for use meet your daily basic needs. Made of stainless steel material, the 304 stainless steel material provides strength and offers good resistance in many environments. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry., Weight: 1.354520137728 pounds, Manufacturer: Yoeruers