1Place of origin:Guangdong China(mainland) 2Material:stainless steel,carbon steel 3Size:10-32 4model number: DIN,GB,ANSI SS304,303 ... of origin:Guangdong China(mainland)2Material:stainless steel,carbon steel3Size:length,5-60mm,head thick,0.1 head size.54model number: DIN ... Head , Truss Head4Finish:Zinc plated,Nikel plated,Oxidation,etc Stainless steel Security Screw