1、 Classification:
The drilling screw is a kind of wood screw, and the self-tapping screw is a kind of self-locking screw.
Padded thread drill tail nail
2、 Distinguish between head types:
Drill tail screw head types include: hexagon head, hexagon flange head, cross countersunk head, cross pan head
The head types of self-tapping screws include: cross countersunk head, cross pan head, hexagon head, cross semi-countersunk head, etc
Hexagon head galvanized self-tapping screw
3、 Distinguish in use:
Drill tail screws are mainly used for fixing colored steel tiles and thin plates of steel structures. The main feature is that the tail is drilled or pointed. When in use, drilling, tapping, locking and other operations can be completed directly on the material without auxiliary processing, which greatly saves installation time.
Self-tapping screws have high hardness and can also be applied to some materials with high hardness, such as iron plate. Low tightening torque and high locking performance.
Hardened hexagon flange drilling tail nail
4、 Differentiate in performance:
Drill tail screw is a tool that uses the physical and mathematical principles of the circular rotation and friction of the inclined plane of the object to tighten the parts of the object step by step. The drilling screw is a screw with a self-tapping drill bit at the front end of the screw.
Self-tapping screws are mainly used for connection between thin metal plates (steel plates, saw plates, etc.). When connecting, first make a threaded bottom hole for the connected part, and then screw the self-tapping screw into the threaded bottom hole of the connected part.
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Post time: Feb-03-2023