Permacoat deck screws from Precision have been specifically designed for use with CAQ treated wood or other chemically treated lumber. These screws do not rust, stain or streak. The head and shank are made of reinforced steel for extra strength, while the Speed-drill thread ensures faster driving. These flat head screws feature a cedar-coloured finish so they can blend perfectly into the wood. Each 5 lb box includes (539) 2 1/2" #8 screws.