Worker of self-tapping screws

Self-tapping screws, as the name suggests, are screws that can be tapped by themselves.

The difference between self-tapping #screws and available screws is that general screws must have machined screw holes to screw in. Self-tapping screws are not required; they have tapped themselves while screwing in. To achieve the purpose of their tapping, this hexagonal drill tail screw is generally pointed to facilitate the squeeze into the object to be screwed.

1. Self-tapping screw is a kind of screw with the drill bit and hexagon #bolt through unique power tool construction, drilling, tapping, fixing, and locking once completed. Self-tapping screws are mainly used to connect and improve thin plates, such as the connection between the color steel plate and the color steel plate. The relationship between the color steel plate, purlin, wall beam, etc., and its penetration capacity is generally not more than 6mm. The maximum is 12mm at maximum.

2. Self-tapping screws are often exposed to the outdoors and have strong corrosion resistance; Their rubber sealing ring ensures that the screws do not penetrate water and have good corrosion resistance.

3. Self-tapping screws are suitable for using #wooden materials, which we often call wooden screws. Generally, it is manually operated, and due to workforce limitations, this screw is usually tiny, and the scope of use is relatively narrow.

4. The self-tapping screw is a combination of tap and bolt. The front is a tap, and the back is a thread. On generally softer materials, drill a hole and screw it directly. The cable is tapped, followed by the bolt thread. If the screw diameter is small, the material is also very soft. It is possible not to punch holes first, such as screwing into wood.

5. Self-tapping screws are usually described by three parameters: screw diameter progression, number of threads per inch length, and screw length. There are two types of screw diameter stages: 10 and 12 grades, the corresponding screw diameters are 4.87mm and 5.43mm; the number of threads per inch length has 14, 16, and 24 three stages, the more threads per inch length, the stronger its self-drilling ability.