Differences between self-tapping and self-drilling screws

26 Mar.,2024

 

Self-Tapping Screws are widely popular and come in a range of different sizes and with different tip shapes, such as pointed or flat, to suit their application. Their most important feature is that they remove the need for a tap by having sharp cutting threads that can cut their own thread as the screw is fastened into the material.  

They can be used in a variety of different materials such as wood, metal, plastic, and brick. With some exceptions like soft wood, they are not able to drill their way through materials and therefore require a pre-drill of a pilot hole before fastening. The pilot hole should be smaller than the screw to allow the threads of the self-tapping screw to furrow their way into the material for a secure fixing. 

Some self-tapping screws are also commonly called sheet metal screws, as they are most widely used in this application.

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