Hexagon head screws fully threaded ISO 4017 Hexagon nuts ISO 4032 Sizes and quantity required in the enclosed file. Hot dip galvanizing process must be according to norms HRN EN ISO 10684 (ex DIN 267-10) and HRN EN ISO 1461. The mean thickness of the zinc coating must be at least 50 µm, locally at least 40 µm Please specify the thickness of the zinc coating that will be applied to goods. We require certificate of production control and statement about the product characteristics along with the goods.