Standard self drilling tek screws were never designed to go from metal to wood as the diameter of the hole that the drill bit will create will be close to the same diameter as the outside threads of the threaded portion of the fastener and will not allow the threads to tap into the wood to be secure. Teks roofing screws provide secure metal to metal fastening with strong holding power without the need to pre drill. We also provide fastens for metal panels.
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