Can Be Used For Fastening metal Use with sheet metal Signs Fencing Trailers Description The Zenith Metal Self-Drilling Screws have a hardened drill point that will drill and thread in structural steel and mild steel. These metal drill points are designed in a manner much the same as a high speed drill bit. This screw has been gold passivated for corrosion protection. Main Feature Hardened drill point that drills and threads simultaneously. Gold passivated finish provides corrosion protection Hexagonal head Self-drilling Specifications Attribute Value SKU EDC7735 Brand Zenith Product Type Self Drilling Screw Diameter 12 - 14 ga Length 35 mm Drive Type Hex Head Type Hex Material Steel Finish Gold Passivated Pack Size 12/Pack