Daggerz 1/4" x 3-1/4" Self-Drilling Plywood-to-Metal Screw with Wings, Star Flat Head - ACQ Dagger Ultra-Guard Coating, Qty. 900Daggerz brand self drilling screws are a high quality screw designed for wood to metal fastening jobs. The #4 self drilling point drills through metal easily and eliminates the need for any pre drilling. The wings on the screw point are designed to ream a larger hole in the wood and break off when they hit the metal so the wood can be drawn tight to the steel. The flat head is designed to sit flush with the wood once installed. The proprietary ACQ