Self Drilling Screws Hexagon Head

We are Offering Self-drilling or Self-tapping Metal Screws Increase Productivity By Reducing the Number of Steps Required to Screw Together Pieces of Metal. a Self-drilling Screw Has a Chisel Tip Similar to a Drill Bit. this Allows You to Skip Pre-drilling a Hole Into Thinner Gauges of Sheet Metal. the Metal Thickness that You are Drilling Into Needs to Be Thinner Than the Length of the Drilling Point of the Screw. if the Screw Threads Contact the Surface of the Metal Before the Hole is Bored, the Screw Will Snap, Leaving a Portion of the Screw Embedded in the Metal.