... , Mechanical Galvanized, Black, Hot-dipped GalvanizedHead : Flat Head, Checkered Head, With or Without Counter Sunk, Large Flat Head, Brad Head, Umbrella ... with WasherShank:Smooth Shank, Fluted Shank, Screw Fluted, Square Shank, Square Twisted Shank, Spiral Shank, Annular Shank, Barbed ShankPoint: Diamond Point, Blunt Point, Chisel Point, Screw Point, Duck Drill ...