Shenzhen Shi Shi Tong Metal Products Co., Ltd

  Points for lightning protection when purchasing countersunk stainless steel screws For fasteners, if you purchase without knowing it, it is easy to step into the pit. After all, the fastener industry is not that simple. For example, when we are purchasing  countersunk stainless steel screws  w hat points should be paid attention to? What is the specific grade of  countersunk stainless steel screws ? For those who are not familiar with screws, stainless steel is stainless steel, there is no difference. But for the familiar, there are many kinds of stainless steel, such as 201, 304, 316 and other grades. The composition, performance and price of different grades of stainless steel are different.   The price of 201 grade stainless steel screws is very cheap compared to other grades of stainless steel, and the quality is not very good, it is easy to rust, and the corrosion resistance is not very good. The 304 grade stainless steel is used more in the screws. After...

For those who purchase screws, the weight of the screws is also important to them because the weight of the screws is also related to their purchase cost. Mr. Xing’s  stainless steel countersunk self tapping screws  were designed to be fully threaded at the beginning. But because the length of this  stainless steel countersunk self tapping screws  is too long, there are 85mm, the cost of cavities will be very expensive, and later they are changed to half thread. And the drawn drawings were given to the Shi Shi Tong screw manufacturers.   After reading the drawings of Mr. Xing, Shi Shi Tong screw manufacturer asked Mr. Xing whether there is any requirement for the diameter of the rod of the  stainless steel countersunk self tapping screws . Mr. Xing’s screw thread diameter is 5mm. If the rod diameter is designed to be 4.6mm-5.0mm, then it is necessary to open the mold. If the rod diameter is designed to be 4.0mm-4.3mm, then no mold opening is requi...

  Production standard for countersunk self tapping metal screws No matter which company or factory, there will be a standard when producing products. The production of  countersunk self tapping metal screws  is naturally standard, so what is its production standard? Before production, we need to confirm the  countersunk self tapping metal screws , what the customer’s requirements are, then we will produce according to the customer’s requirements, and whether the size of the screw can be made, so there is no defect in the design, if there is any defect Avoid, we have to make it clear to our customers.   At the time of production, we must strictly follow the dimensions in the drawings and take the corresponding molds and wires to ensure that the  countersunk self tapping metal screws  produced by the customers are the size required by customers. In the process of production, it is necessary to check the production situation after a certain period of time...

  It is worthy of being a friend to recommend the countersunk self tapping screws manufacturer reliable Mrs. Mi of Zhongshan went to her friends once to work, talking about the durability of the  countersunk self   tapping screws  used in her factory, which led to the continuous increase in the cost of purchasing. After knowing the situation, her friends tried her best to recommend SST to Mrs. Mi, so later Mrs. Mi became naturally connected to the SST countersunk self-tapping screw manufacturer. Because Mrs. Mi is to do auto parts, so the precision and hardness of  countersunk self   tapping screws  are more strict, only after high frequency heat treatment countersunk head tapping screw can reach the hardness required by meter small, in terms of accuracy is also very difficult to process, only imported precision equipment plus experienced old master can achieve such strict accuracy requirements. Just in time, SST is 21...

  When M3 carbon steel countersunk head long screws become bent… When you want to use long screws urgently, the screws are bent. What should you do? After a pleasant communication with Miss Liang from the sales department of Shi Shi Tong, Mr. Wang from Hangzhou decided to give 200  M3 carbon steel countersunk head   long screws  with bent rods to Shi Shi Tong for straightening. According to Mr. Wang’s experience, Ms. Liang first told Mr. Wang the reason for bending  M3 carbon steel countersunk head long screws . Because Mr. Wang required to improve the hardness, strength, and corrosion resistance of the screws, the original last factory made heat treatment of the screws, that is, hard surface treatment. After measurement, the rods of the screws are bent from 0.2mm to 1.2mm. The reason for this is that carbon steel screws are usually heat treated as a bunch of screws, so there are always unevenly heated screws, which can cause them to bend. In addition, the rate ...

Shi Shi Tong provides customers with countersunk self tapping screws for steel easy to break solution I believe that when using screw fasteners, I hope that this screw should not be broken when it is used, or it can not be used. Mr. Zhou encountered that his  countersunk  self tapping screws for steel  were easy to break when in use. After Mr. Zhou found Shi Shi Tong, he asked us how to solve the problem that his screws are not easy to break. There are several reasons for the  countersunk self tapping screws for steel . One is the problem of material, the other is the problem of torsion, the other is the problem of not performing heat treatment. One is that the structure of the screw is unreasonable, and the other is the removal of hydrogen. Time is not handled well. Generally, the screws caused by these several aspects are easily broken. After understanding the various dimensions, material composition, strength grade, heat treatment, and torque during the use of Mr....

  Why do countersunk self tapping screws need a cutting thread? Mr. Yuan needs  countersunk  self tapping screws , flat tail, hexagonal slot type, carbon steel plated with environmentally friendly zinc, indicating that he wants the angle of the countersunk head to be 120°. Generally, the angle of the  countersunk self tapping screws  is 90°, but the 120° CPT screw manufacturer can also be produced. I also asked Mr. Yuan about the specific product parameters, and what products this screw is used on. Mr. Yuan gave us the specific parameters, saying that these  countersunk self tapping screws  are used on the iron plate, and asked if there is any way to increase the self tapping ability of the screw. Then we suggested that Mr. Yuan cut thread self tapping screws of the countersunk head. Cutting thread can increase the self tapping ability of the screw.   Mr. Yuan agreed to use the countersunk self tapping screws cutting ...