Forgefix Round head nails are multi-purpose nails, for use with both soft and hard timber materials. They are galvanised for increased durability. Application - These nails are the most popular type of nail, used in many joinery and construction applications.Galvanisation is process of applying a protective zinc coating to steel in order to prevent rusting. Zinc coatings prevent corrosion of the protected metal by forming a physical barrier and by acting as a sacrificial anode even if this barrier is damaged. 1 x 2.5 kg Round Head Nail.