These 3 1/2" length #3 Phillips drive Flat Head WAR Coated Self-Drilling screws with WINGS are 1/4" diameter (20 threads per inch) #4 Point. W.A.R. Coating is defined as W eather A CQ treated R esistant. Designed to work with ACQ Treated lumber W.A.R. coating is a high-grade metal surface processing technology that prevents corrosion. The coating system consists of three layers; a metallic zinc layer, a hex-chromium or trivalent chromium passivation, and a high-grade anti-corrosion chemical conversion film. Rated at 1,000/hrs salt spray. Reaming type WINGS are attached after the threads and before the drill point to ream out the top material, eliminating any jacking action. Each box contains approximately 800 screws (30 pounds)

These 3 1/2" length #3 Phillips drive Flat Head WAR Coated Self-Drilling screws with WINGS are 1/4" diameter (20 threads per inch) #4 Point. W.A.R. Coating is defined as W eather A CQ treated R esistant. Designed to work with ACQ Treated lumber W.A.R. coating is a high-grade metal surface processing technology that prevents corrosion. The coating system consists of three layers; a metallic zinc layer, a hex-chromium or trivalent chromium passivation, and a high-grade anti-corrosion chemical conversion film. Rated at 1,000/hrs salt spray. Reaming type WINGS are at