These forgefix screw eyes are zinc plated for increased resistance to corrosion they simply screw directly into timber and similar materials drilling a pilot hole is advisable the screws are also suitable for use with all types of wall plugs applicationscrew eyes are used to attach cables wires and twine to numerous applications zinc coatings prevent oxidation of the protected metal to create a longer lasting finish it does this by forming a barrier and by acting as a sacrificial anode if this b