Dear Sir/Madam,Standard: DIN 7504KMaterial: Carbon steelFinishing: Blue/white zincGrade:class4.8, class5.5Profit model:FactoryStandard:ISO JIS ANSI DIN BS GBI require sizes:4.8x195.5x255.5x355.5x455.5x555.5x68The product should be zinc coated with washer(EPDM or steel bonded). It should also have an IG head mark. Show More