Big Timber No. 15 Ga. X 4 in. L Star Round Head Construction Screws 25 lb 400 pk

Heat-treated hardened steel for high tensile strength and high shear strength. Triple layer ACQ compatible bronze coating for exterior or interior use. Deep six-lobe star drive recess reduces cam-out end load. Handles twice the torque as Phillips or Square Drive while extending the life of the bit. Aggressive knurl enlarges hole to reduce splitting and drag to help draw lumber together. Type 17 tip for faster precise starts which eliminate "walking" and provides easier insertion without pre-drilling. International building code and international residential code compliant.