What Is A Self-Tapping Screw?

Generally, it refers to pointed, coarse teeth, and hard wood screws, as well as aluminum alloy and plastic. A special kind of self-tapping screw used for threading metal holes is called a tap.

Self-tapping screws are used for non-metal or softer metals, without drilling holes and tapping; self-tapping screws are pointed, so that they can "self-tapping"; ordinary screws are flat-headed and have the same thickness.

Self-tapping screw means: the drilled hole is a hole that does not require tapping. The screw used is different from the general one. The head is sharp and the tooth spacing is relatively large. , metals and plastics usually use this method.

It can "tap-drill, squeeze, press" the corresponding thread on the consolidated body by its own thread on the consolidated material, so that they can be closely matched with each other.