(5 LB) Big Timber 5BTX105 10 x 5" Bronze Star Flat Head Screws (Approx. 185)General Purpose Corrosion Resistant Exterior Wood Screw; For exterior professional operations using hard or soft woods, chipboard and other tough or treated materials Hardened Steel with Triple Ceramic Coating; 1200 hour corrosion resistance in both ACQ and salt spray conditions; Spiral notches in threads makes wood screw easier to drive Self Countersinking Head with under head cutting nibs; Deep, Wide, Sharp Threads Provide maximum holding power;