Drilled tail screws and self tapping screws are foolishly indistinguishable

Screw is one of the common fasteners, and there are many types of screws, including drill tail screws and self tapping screws.

What is a drill tail screw?

Drill tail screw

The tail of the drill tail screw is in the shape of a drill tail or pointed tail, without the need for auxiliary processing. It can be directly drilled, threaded, and locked on the setting material and basic material, greatly saving construction time. Compared to ordinary screws, they have high toughness and maintenance force, and will not loosen even after being combined for a long time. It is easy to use safe drilling and tapping to complete the operation in one go.

Especially in the combination of construction, architecture, residential and other places, self tapping and self drilling screws are the best economical fasteners in terms of operability, cost, and credibility.

What is a self tapping screw?

Self tapping screws

Self tapping screws, also known as quick tooth screws, are steel quick fit fasteners that have been surface galvanized and passivated. Self tapping screws are commonly used for connecting thin metal plates (such as steel plates, aluminum plates, etc.). When connecting, first create a threaded bottom hole for the connected part, and then screw the self tapping screw into the threaded bottom hole of the connected part.

How to distinguish between drill tail screws and self tapping screws?

① Distinguishing between drill tail screws and self tapping screws in terms of material:

Drill tail screws belong to a type of wooden screws, while self tapping screws belong to a type of self-locking screws.

② Distinguishing the use of drill tail screws and self tapping screws:

Drilled tail screws are mainly used for fixing colored steel tiles on steel structures and thin plate materials. The main feature is that the tail is in a diamond or pointed tail shape. When in use, there is no need for auxiliary processing, and operations such as drilling, tapping, and locking can be directly completed on the material in one go, greatly saving installation time.

Self tapping screws have higher hardness and can also be applied to materials with higher hardness, such as iron plates. Has low tightening torque and high locking performance.

③ Distinguishing between drill tail screws and self tapping screws in terms of performance:

Drill tail screws are tools that use the physical and mathematical principles of the oblique circular rotation and frictional force of objects to gradually tighten the mechanical components of objects. Drill tail screws are screws with a self tapping drilling head at the front end of the screw.

Self tapping screws are commonly used for connecting thin metal plates (such as steel plates, aluminum plates, etc.). When connecting, first create a threaded bottom hole for the connected part, and then screw the self tapping screw into the threaded bottom hole of the connected part.