Shenzhen Shi Shi Tong Metal Products Co., Ltd

  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...

  Countersunk self tapping screws – make good products at low cost In fact, many customers need   countersunk self tapping screws , but there are some concerns about the products from the countersunk self tapping screws factory. I am worried that the finished products of countersunk self tapping screws will not work well, which will not only affect their own use but also affect themselves. Capital budget. In fact, everyone does not need to worry about this, because the finished products processed by the  countersunk self tapping screws  factory are still very good, and its production is very rigorous, regardless of whether the choice of production raw materials or the choice of production technicians are very strict standards. The production process is also very complete, so from this aspect, you can fully understand that the finished products processed by countersunk self tapping screws work well. Secondly, Shi Shi Tong manufacturers must also receive strong st...

  According to the production of countersunk self tapping screws samples June 10, 2019, the  countersunk self tapping screws  manufacturer Shi Shi Tong Metal Products Co., Ltd. received samples from Australia. It is a black countersunk hexagon self-tapping screw. From the appearance, there is no difference from our common  countersunk self tapping screws . We tested the customer’s sample data and found that this was a UNC countersunk self-tapping screw rather than a metric countersunk screw in China. As the customer said it was easy to slide and break the head. We tested the strength of the screw, and found that the sample sent from the customer was not subjected to hardening heat treatment After we asked about the customer’s request for strength, the final customer decided to add a hard to 6.8 grade. The pre-load torque corresponding to the 6.8 level was 674.3-732.7N and the received torque was 0.23-0.28 Nm. June 16, these  countersunk self tapping screws ...

  Mr. Alexandr Mlinarsky found the SST, who is a   countersunk self tapping screws manufacturer, and wanted to customize 50000pcs M3 countersunk self-tapping screws. Through communication with Mr. Alexandr Mlinarsky, it was learned that he had always cooperated with Hubei countersunk self-tapping screw manufacturer. But recently that company is becoming more and more inappropriate, delivery is always very late, so look for new suppliers. Mr. Alexandr Mlinarsky sent the  countersunk self tapping screws  drawing to SST, hoping that SST could deliver it quickly, as their products were in urgent need of these  countersunk self tapping screws . After looking at the drawing, SST said it could hand over 50000pcs to him in 4 days. Results the world has only 3 days to complete the production, fast delivery to Mr. Alexandr Mlinarsky, customers are also very satisfied after receiving, said that the SST is very good to cooperate, will maintain a good relationship of coopera...

  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 ...

SST’s countersunk self tapping screws factory fast delivery time to your satisfaction! : Mr. Alexandr Mlinarsky found the SST, who is countersunk self tapping screws manufacturer and wanted to customize 50000pcs M3 countersunk self-tapping

Mr. Chen has previously purchased 3 times at Shishitong screw manufacturers. This time, Mr. Chen also gave us a new  stainless steel  countersunk  self tapping screws  at the same time as the pan head Phillips screw before the purchase. Because this  stainless steel countersunk self tapping screws  was newly designed by Mr. Chen, he was worried that it would not be as good as the previous pan head Phillips screw. Therefore, after receiving the goods, Mr. Chen took the  stainless steel countersunk self tapping screws  and did a test. Look at whether he has met his requirements, and there will be no problems in the actual assembly. After getting the test results, Mr. Chen found that all of them passed the test and there was no bad quality. It also does not affect the assembly and is also very good to use. In fact, for screw fasteners, as long as the size is within the tolerances confirmed by the customer, it will not affect the assembly...

Mr. Yuan needs a  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 this  countersunk self tapping screws  is 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 cutting 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 thread, and then let us give him a price including tax and s...

countersunk self tapping screws

Mr. Chen has previously purchased 3 times at Shishitong screw manufacturers. This time, Mr. Chen also gave us a new  stainless steel  countersunk  self tapping screws  at the same time as the pan head Phillips screw before the purchase. Because this  stainless steel countersunk self tapping screws  was newly designed by Mr. Chen, he was worried that it would not be as good as the previous pan head Phillips screw. Therefore, after receiving the goods, Mr. Chen took the  stainless steel countersunk self tapping screws  and did a test. Look at whether he has met his requirements, and there will be no problems in the actual assembly. After getting the test results, Mr. Chen found that all of them passed the test and there was no bad quality. It also does not affect the assembly and is also very good to use. In fact, for screw fasteners, as long as the size is within the tolerances confirmed by the customer, it will not affect the assembly, an...

In the carburizing process of countersunk self tapping screws , the deep carburizing process is different. For workpieces with a carburized layer depth greater than 1.0 mm, such as automobile gears, the carburized layer depth and the carbon concentration distribution of the layer, even the layer The depth of the over-eutectoid layer and the eutectoid layer may have certain requirements. In order to ensure a high carburization rate, such parts are often diffused using an atmosphere having a carbon potential of 0.7% C-0.8% C after high carbon potential carburization. In order to reduce the distortion caused by direct quenching after carburizing and reduce the martensite and retained austenite grade, the process of furnace cooling to 820-860 ° C isothermal and then quenching is required after the end of the diffusion phase to ensure that the layer and the core are Qualified hardness and good microstructure. The requirements for carrier gas and rich gas in this carburizing process are diff...

About three months ago, Mr. Wan came to consult with us Shi Shi Tong on a  stainless steel countersunk self tapping screws . According to Mr. Wan's drawings, we quickly reported the price to Mr. Wan. Mr. Wan said that he is still waiting for the offer of other screw suppliers, and will tell us when there is a result. And asked which grade of stainless steel is in our offer. We said it was the 304HC grade, and then Mr. Wan asked if we could make 201 grade stainless steel and gave him a price of 201  stainless steel countersunk self tapping screws . We recommend that Mr. Wan not use the 201 grade stainless steel. The screws produced by this grade are easily broken. Mr. Wan said that he would consider it. A week later, when he contacted Mr. Wan again, Mr. Wan said that he had already confirmed the supplier. He chose to produce stainless steel pan head tapping screws with 201 material. But last week, Mr. Wan contacted us again and wanted to use the  stain...