Defines the characteristics and performance of mechanical fasteners made of steel, including nails, screws and staples, intended to be used for the fixing of gypsum board in accordance with EN 520, gypsum boards with fibrous reinforcement in accordance with EN 15283-1 and EN 15283-2, composite panels according to EN 13950, products from secondary processing in accordance with EN 14190 and suitable ancillary products, to timber and metal, as appropriate, in building construction works.