Find a huge selection of DIN 7981 Stainless Steel Pan Head Phillips Self Tapping Screw from China at Gangtong Zheli. Provide professional after-sales service and the right price, looking forward to cooperation. The DIN 7981 Stainless Steel Pan Head Phillips Self-Tapping Screw is a reliable and versatile fastener suitable for various industries and applications. Its self-tapping feature, corrosion resistance, and compliance with industry standards make it a preferred choice for projects requiring secure and efficient fastening solutions.

DIN 7981 Stainless Steel Pan Head Phillips Self Tapping Screw

A self-tapping screw possesses the unique capability to create its own thread path within a material while being driven into it. When dealing with hard substrates like metal or rigid plastics, this ability is often achieved by altering the screw's thread continuity. This modification creates a gap in the thread, shaping a flute and cutting edge reminiscent of those found on a tap. Consequently, unlike a regular machine screw that cannot carve its own path in a metal surface, a self-tapping screw can achieve this task, provided the hardness and depth of the substrate are within reasonable limits.

Conversely, for softer substrates such as wood or pliable plastics, the self-tapping feature may be accomplished with a different approach. This involves employing a pointed tip that tapers to a gimlet point, omitting the need for a flute. Similar to the action of a nail or gimlet, this pointed tip shapes the hole by displacing the surrounding material, rather than executing a conventional drilling or cutting action that generates chips.