These Multi-Purpose Pozi Screws with countersunk heads have a zinc yellow passivated finish for increased durability. The screws are immensely popular and versatile, and used in all trades including joinery, electrical and plumbing. Also widely used in DIY applications. APPLICATION Suitable for use with many materials including PVCu, Timber, Chipboard, MDF, and other similar types. The Zinc Yellow Passivation process of electroplating is similar to the 'Galvanised' and 'Zinc Plated' processes but...