1Made of 304 stainless steel material, the 304 stainless steel material provides strength and offers good corrosion resistance in many environments 2Ideal for use in confined areas where you need hex socket cap head screws 3There are eleven common lengths that you can choose for general purpose use and many projects 4These M3 screws will be great replacement for industrial and construction fasteners 5Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry