Self drilling tapping screw

Self-drilling tapping screws, also known as TEK screws or self-tapping screws with drill point, are fasteners designed to drill their own pilot hole and form a mating thread in a single operation. These screws feature a hardened drill point tip that eliminates the need for pre-drilling, making them ideal for fastening materials like sheet metal, steel profiles, and thin structural sections. They are available in various head styles (hex, pan, countersunk), drive types (hex, Phillips, Torx), and material grades (carbon steel with zinc plating, stainless steel). Key technical parameters include thread diameter (e.g., #8, #10, #12, 1/4"), length, drill point capacity (e.g., 0.035" to 0.250" material thickness), and tensile strength ratings.

These screws are widely used in construction, HVAC ductwork, metal roofing and cladding, electrical enclosure assembly, and general industrial fabrication. They are essential for fastening metal-to-metal or metal-to-wood in applications where speed and reliability are critical, such as securing cable trays, mounting electrical panels, and assembling steel structures. Their self-drilling capability reduces installation time and labor costs compared to traditional fastening methods.

Key subcategories include hex washer head self-drilling screws (e.g., TEK 2, TEK 3, TEK 5), which are the most common for structural applications. Pan head and flat head variants are used for flush mounting or aesthetic finishes. Article codes typically follow a pattern like "TEK-3-12-1" where "TEK" indicates the type, "3" the drill point capacity, "12" the thread size, and "1" the length in inches. Other common codes include "SDST-10-16" for self-drilling screws with specific diameter and length.

Partnering with Electric Automation Network ensures access to a comprehensive inventory of self-drilling tapping screws from leading manufacturers, with real-time pricing and global express shipping. Our team of specialized engineers provides technical support for fastener selection, including material compatibility, load calculations, and corrosion resistance advice. We offer detailed documentation per article, including mechanical properties and installation guidelines, ensuring you get the right fastener for your application.