1Made of 304 stainless steel material, the 304 stainless steel material provides strength and offers good corrosion resistance in many environments 2With the addition of an integrated flange at the base of the head, this kind of screw eliminates the need for a flat washer 3There are five common lengths that you can choose for general purpose use and projects 4These M6 flanged-hex 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