ITW Shakeproof TEKS® Self-Drilling Fasteners work great in both sheet metals and non-metals. Once the hole is drilled, the fastener taps the hole in the same way as thread forming or cutting screws do. The mating threads are created to match the threaded fastener perfectly. The screw is designed so that the drilling function is completed before the initial thread engages so that all voids and material thicknesses are accounted for. At ITW Shakeproof Industrial, we are your source for TEKS self-drilling fasteners.