Self-drilling and self-tapping screws can be drilled, tapped, and locked directly on the setting materials and basic materials at once and quickly. They can be quickly and automatically drilled and directly tightened and fixed, which saves construction time to the greatest extent and improves the efficiency of engineering construction. Efficiency and improved economic benefits. The connected parts riveted with self-drilling self-tapping screws have strong bonding force, high pre-tightening force, and high stability of the connected parts.

The difference between self-drilling and self-tapping screws and ordinary self-tapping screws is that when connecting, ordinary self-tapping screws must go through two processes: drilling (drilling threaded bottom holes) and tapping (including fastening connections), while self-drilling and self-tapping screws When the screw is connected, the two processes of drilling and tapping are directly combined and completed at one time. Drill tail screws are characterized by low screwing torque and high locking performance. They have better working performance than ordinary self-drilling and self-tapping screws and can be used instead of machine screws.

Drill tail screws are mainly used for connecting and fixing some thinner plate parts, such as the connection between color steel plates and color steel plates, the connection between color steel plates and purlins, wall beams, etc. Their penetration capacity generally does not exceed 6mm, and the maximum does not exceed 12mm. Drill tail screws are widely used and are suitable for installation of stainless steel plates, metal steel plates, galvanized steel plates, or other engineering projects, indoor and outdoor installation of metal curtain walls, metal light partitions, plastic steel doors and windows, etc., and installation of channel steel, iron plates and other metal materials. And other steel structure installation. Common assembly projects such as car compartments, containers, shipbuilding, refrigeration equipment, and environmental engineering are inseparable from drill tail screws.

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