The ForgeFix Spectre Screws are advanced multipurpose wood screws with double countersunk heads and pozi compatible recess. They have a sawtooth thread design to prevent splitting and reamer to prevent jacking. The screws have a zinc yellow passivated finish for excellent resistance to corrosion. The zinc yellow passivation process of electroplating is similar to the 'galvanised' and 'zinc plated' processes but with the addition of a yellow dye. It offers an aesthetically pleasing finish. Specification: Size: 3.5 x 16mmThread: Fully threadedPack Quantity: Box of 200 Forgefix Spectre Screw Pz Compatible Csk Zyp 3.5 X 16Mm (Box 200) in Gold