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The construction industry demands rapid assembly methods without compromising structural integrity. Traditional fastening methods, such as riveting or bolting, often require pre-drilling, which increases labor costs and introduces potential alignment errors. Self-drilling screws (often referred to by the genericized trademark "Tek screws") were developed to address these inefficiencies.

Self-drilling screws are indispensable components in modern steel construction, offering a balance of speed, strength, and cost-effectiveness. Their performance is dictated by a complex interplay of geometric design (drill point and thread), material science (heat treatment), and installation parameters. For structural engineers, understanding the failure modes—specifically pull-out and pull-over—is essential for designing safe and durable thin-walled steel systems. selfdrillingsms