The main difference between self-tapping screws and ordinary screws lies in their properties, characteristics and uses, as follows:

First, the nature is different.

1, self-tapping screw

Self-tapping screw is a kind of screw with drill bit, which can be drilled, tapped, fixed and locked with special power tools.

2, ordinary screws

Refers to the more common and commonly used, more common, not all special-shaped screws are ordinary screws.

Second, the characteristics are different.

1, self-tapping screw

On the consolidated material, the consolidated body can tap, drill, extrude and press the corresponding threads through its own threads, so that they are closely matched and can be directly screwed in without tapping.

Step 2 screw

Ordinary screws are flat-headed, with the same thickness, and can only be tapped and tapped.

Third, the application is different.

1, self-tapping screw

Used for nonmetallic or soft metals, bottomless holes and openings.

Step 2 screw

Used for nonmetals or metals that need bottom holes and hard openings.

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