This European Standard specifies the characteristics of hexagon nuts with flange, with metric fine pitch thread, with nominal thread diameters from 8 mm up to and including 20 mm, in product grade A for d <= 16 mm and product grade B for d > 16 mm and with prperty classes 8, 10, 12 and A2-70. If, in special cases, specifications other than those listed in this European Standard are required, they should be selected from existing European and International Standards, for example ISO 724, EN ISO 898-6, ISO 965-2, EN ISO 3506-2.