14 X 3" Hex Washer Head Self Drilling Sheet Metal 1 Lb (about 32 Screws)

Self-drilling screws are similar to self-tapping screws, except for 1 distinguishing feature. Where self-tapping screws typically have a sharper point, self-drilling screws feature a drill point, which looks similar to the point on a drill bit. It drills a hole for mating threads in 1 simple operation, eliminating the need for pre-drilling.