Find a huge selection of Stainless Steel A2-70 Cross Recessed Pan Head Self Tapping Screw DIN7981 For Metal Plate from China at Gangtong Zheli. Provide professional after-sales service and the right price, looking forward to cooperation. Stainless Steel A2-70 Cross Recessed Pan Head Self-Tapping Screws conforming to DIN7981 standards are reliable fasteners suitable for securely fastening metal plates. Their corrosion resistance, self-tapping capabilities, and compliance with industry standards make them a preferred choice in various industries where metal-to-metal fastening is essential.

Stainless Steel A2-70 Cross Recessed Pan Head Self Tapping Screw DIN7981 For Metal Plate

A self-tapping screw possesses the unique capability to create its own thread within a material while being driven into it. In the case of hard substrates like metal or sturdy plastics, this ability is achieved by incorporating a design that interrupts the continuity of the screw's thread, resulting in the creation of a flute and cutting edge akin to those found on a tap. Consequently, unlike standard machine screws that cannot carve their own path in a metal surface, a self-tapping screw can accomplish this task, provided the substrate's hardness and depth are within reasonable limits.

In contrast, for softer substrates such as wood or soft plastics, the self-tapping characteristic may be achieved simply by employing a tapered tip that gradually narrows to a gimlet point. In such instances, there's no requirement for a flute. Similar to the action of a nail or gimlet, this pointed tip shapes the hole by displacing the surrounding material without necessitating the formation of chips through drilling or cutting actions.