BS EN 14566:2008 PDF FREE.MECHANICAL FASTENERS FOR GYPSUM PLASTERBOARD SYSTEMS - DEFINITIONS, REQUIREMENTS AND TEST METHODS. BS EN 14566 specifies the characteristics and performance of mechanical fasteners, including nails, screws and staples, intended to be used for the fixing of gypsum plasterboard, gypsum boards with fibrous reinforcement, products from secondary processing and suitable ancillary products as shown in Figure 2,...