2mm 3mm Yellow Brass H59 H62 Slotted Countersunk CSK Head Wood Tapping Screw DIN97 For Furniture

2mm 3mm Yellow Brass H59 H62 Slotted Countersunk CSK Head Wood Tapping Screw DIN97 For Furniture

1,Description:

The tail of the screw is generally shown as the shape of drilling tail, the hardness of this screw is very strong, compared with ordinary screws, not only the ability to maintain better, the effect of connecting the object is very firm, for this performance of the screw, generally do not need auxiliary processing, you can directly drill a hole on the object directly to lock the object, not only very convenient to use, It can also greatly improve the efficiency of work. This kind of drilling screw can be said to be the first choice of staff in various fields.

Screw types, whether it is very small screws for glasses or large screws for large heavy electrical engineering. The accuracy of the screws is usually 6g class (2, the US specification "IFI" is 2A teeth), and the rough screws used in construction projects are 1g class. Screws are widely used, so the screw market is large, resulting in more manufacturers producing screws. When choosing a professional screw manufacturer, buyers need to understand some professional basic knowledge of screws, such as screw classification standards and American screw specifications.

Screws are indispensable in daily life and industrial manufacturing, so screws are also known as industrial rice. The application range of screws is: electronic products, mechanical products, digital products, power equipment, mechanical and electrical machinery products. Screws are also used in ships, vehicles, water conservancy projects, and even chemical experiments.

1. First of all, remove the sludge on the surface of the broken screw and matte the center of the section with a center matte, and then install a drill with a diameter of 6-8 mm in the center matte hole of the section with an electric drill, paying attention to the hole must be drilled through. After the hole is drilled, remove the small drill bit and replace it with a 16 mm diameter drill bit. Continue to enlarge and drill through the hole of the broken bolt. 2. Take the electrode with a diameter less than 3.2mm and apply small and medium current to the hole of the broken bolt for surfacing from inside to outside. Take half of the entire length of the broken bolt at the beginning of the surfacing welding. At the beginning of surfacing welding, the arc should not be too long to avoid burning through the outer wall of the broken bolt. After surfacing to the upper face of the broken bolt, continue to surfacing to produce a cylinder with a diameter of 14-16 mm and a height of 8-10 mm. 3. After surfacing welding, hit the end face with a hand hammer to make the broken bolt vibrate along its axis. The heat generated by the previous arc and the subsequent cooling combined with the vibration at this time will loosen the thread between the broken bolt and the body. 4. Carefully observe when a trace of rust is found to leak from the fracture after knocking, you can put the nut of M18 on the surfacing cylinder head and weld the two together. 5. After welding, it is cool and hot with a box wrench set on the nut and turn it around. You can also turn it back and forth while tapping the nut end face with a small hand hammer so that the broken bolt can be removed. 6. After removing the broken bolt, process the thread in the frame with a proper tap to remove the rust and other debris in the hole.

The main purpose is to make industrial products composed of a fixed body, in the use of teeth and teeth often can not be close, too hard to lock the screw head is broken, or poor dental lock is not tight and failed to meet the conditions of use, are precision problems. Screws are "quantity products", not hand-made artworks, in mass production, in order to achieve high precision and stable quality and popular price supply to consumers for the purpose. The accuracy of the screws is usually 6g (Class 2, the US specification "IFI" is 2A teeth), and the rough screws used in construction projects are 8g (Class 3, "IFI" is 1A teeth).

3,Specifications:

4,Feature Advantage:

Stainless steel screw surface corrosion prevention treatment refers to the use of various methods to apply a maintenance layer on the metal surface, its role is to isolate the metal and the corrosive environment, to inhibit the corrosion process, or reduce the corrosive medium and the metal surface contact, so as to avoid or reduce the purpose of corrosion.

Corrosion resistance, wear resistance, high hardness,

Stainless steel screws are made of metal, and metal corrosion prevention methods mainly have four aspects, that is, the nature of the material itself, the use of the environment, the interface of data and the environment and the improvement of metal structure design, if the use of complete corrosion resistant alloy to manufacture stainless steel screws, unless there are special needs, otherwise in the economic concept is not cost-effective, It is also impractical to completely isolate the external surface of the screw from corrosive environmental elements. Improved metal structure design can improve the impact of special circumstances in a certain situation, but the design of most stainless steel screws can not be fully corrected, and its maintenance role is not permanent, so this method can not deal with the basic problem, as long as the surface corrosion prevention, that is, the appearance of corrosion prevention treatment is the most widely used method.

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