Shenzhen Shi Shi Tong Metal Products Co., Ltd

Today, Mr. Li once again placed  m5 long screw . Mr. Li is a purchaser of well-known chassis manufacturers in Hangzhou. This is his third order this year. These m5 stainless steel long screws are mainly used on the chassis. Strict requirements, natural requirements for stainless steel long screws can also meet high quality requirements. Mr. Li found Shenzhen Shi Shi Tong at the beginning of this year and consulted to produce  m5 long screw . In the early communication, Mr. Li made it clear that this stainless steel long screw does not accept the welding process, the strength needs to reach 8.8, the appearance of the screw head requires beautiful appearance. After several conversations with Miss Song, Mr. Li gave a sample list. Although the number of samples was small, Mr. Li said that if the sample was qualified, it would place a large order, so Shi Shi Tong also received this. Small sample list. The cycle of proofing time was very short, because Mr. Li was in a...

Long screw manufacturers, we can find a lot of manufacturers to produce long screws in China, but looking for a long-term cooperation with long screw manufacturers is not so simple, but also need a certain luck can find such a  extra long stainless steel screws  manufacturers, put themselves in the place for the sake of customers . Anny from Taiwan returned to the order for the second time today. Anny is a member of a trading company in Taiwan. At the beginning of this year, he found Shi Shi Tong at the international station. [Shi Shi Tong screw manufacturer applied for independent export rights in 2017 and started Shi Shi Tong’s overseas business] although Shi Shi Tong and fellow Taiwanese anny I have been communicating by mail, but the trust between them has gradually increased in the mails. After half a month of communication to confirm the specifications of the long screws, anny has placed the order.  E xtra long stainless steel screws  are mu...

We know that China’s ability to develop so rapidly is inseparable from technological innovation, which is the source of economic growth and economic development. Enterprises are the carriers of economic growth and economic development. The technical level of the enterprise and the ability of technological innovation not only determine the competitiveness of the enterprise, but also play an important foundation role in the development of the entire industry and economy. With Shi Shi Tong’s transformation from screw wire to peer business to service terminal customers, from the small profits but quick turnover to the precise positioning of high-end customers, Shi Shi Tong screws continue to develop new technologies and invest a lot of money in equipment. At present, Shi Shi Tong’s 12.9-stage  12 inch long screw  adopt one-time forming technology, which has stronger strength with welding long screws on the market, and is not easy to break the head. The torque is 80% hi...

Why do customers find Shi Shi Tong to produce full thread  3/8 inch long screws ? A lighting purchaser from Zhongshan, Miss Li, found Shi Shi Tong and asked to produce a batch of M3*99 half-screws. For the manufacturer of Shi Shi Tong specializing in the production of long screws, Miss Li’s The long screw of m3*99 is not difficult, but Miss Li said that it is necessary to reach the class 8.8 screw and it will not break. The reason is that Miss Li has purchased a batch of half thread  3/8 inch long screws   before, but it is broken when used. In the head case, although there are not many broken ends, Customer worried that the use of half thread screws on the lighting will be a safety hazard, so Miss Li re-find a supplier and re-produced  3/8 inch long screws . Shi Shi Tong screw manufacturers focus on long screws custom production for 20 years. According to the customer’s requirements, we can process and customize the non...

Since Shi Shi Tong has made the Internet, it has received inquiries from different regions every day, like  long hex head screws , especially for customers with long screws. We found that Shi Shi Tong had already sold more than 600 customers in this year and a half since doing the Internet. On average, two customers were traded every day. It is still a little excited to think about it. It is not easy for Shi Shi Tong screw manufacturers to do the Internet soon. Xiaobian found in more than 600 customers that the non standard shaped screws produced by Shi Shi Tong accounted for 55%, the standard parts screws accounted for 45%, and the long screws had an order return rate of 80%, while the long screws had orders of 30%. % comes from peers. Most of the long screws are between 70mm-550mm in length, and the head is mostly  long hex head screws  and has a cup shape. The materials are carbon steel, stainless steel and aluminum. The strength gr...

One time to form a long screw, Mr. Zhu from Tianjin sent a non standard  long hex screws  to consult whether it can be produced. The specification of this long screw is M5*650 long, and the required strength grade is at least 8.8, and the welding process cannot be used. produce. Mr. Zhu said that the reason why he has not found a suitable screw manufacturer is mainly because most of the long screw manufacturers use the welding process, and the welding process is easy to break, and the strength level is not up to the requirement. The environment of the screw requires that this long screw needs to have 8.8, and the torque must reach a standard, so Mr. Zhu found many screw manufacturers on the Internet. It was found that Shenzhen Screw Factory Shi Shi Tong can produce a  long hex screws  with a strength rating of 12.9, so Mr. Zhu contacted Shi Shi Tong Screw Factory and sent the drawings. Soon, Miss Song, who calculated the price, calculated th...

Many of Mr. Ma’s products use American-made threads. But recently, Mr. Ma received a  4-40 phillips pan head screw   delivered to him by Shi Shi Tong. Then, Mr. Ma told us that the size of the screws does not meet his assembly requirements. Why? During the actual assembly, Mr. Ma found that some of the threads could be screwed in, but some of the threads were screwed in and found to be small. After Mr. Ma gave us feedback, we told Mr. Ma whether it was possible to tell the thread diameter of the small screw that was found after the assembly. Mr. Ma told us that it is 2.70mm. In the drawings given by Mr. Ma, it is marked with #4-40-2A, and the diameter of this thread is converted into metric: 2.69-494mm-2.82448mm, 2.70mm is within this tolerance. Later, Mr. Ma told us that the proper thread diameter for assembly is 2.72mm-2.81mm. After Mr. Ma finished talking to us, we were aware that Mr. Ma might have given the wrong  4-40 phillips pan head screw , or the s...

Mr. Ye is a purchasing staff member of a design company in Hebei province, responsible for purchasing  truss head screw stainless steel . Shi Shi Tong screw manufacturers made a quotation according to the size of the  truss head screw stainless steel  that Mr. Ye gave. After seeing the quotation, Mr. Ye said why the price of the large flat-head stainless steel screws of the #10-32 is different, and the size is not the same? Although Mr. Ye’s #10-32  truss head screw stainless steel  have the same head size and length, the precision of the threads is different. Mr. Ye wants #10-32-2A and #10-32-3A, one of us has a dental plate and the other one has no dental plate. So the price will be different.

Generally speaking, when customizing or purchasing screw fasteners, the customer basically gives the drawings of the screws to the screw manufacturer, which is convenient for the manufacturer to produce and determine the scope of production. However, if the  round head self tapping screws  have no drawings, can they be produced or customized? If the customer needs to customize the  round head self tapping screws , there is no drawing, but if you know the full size of the screw, you can tell the screw manufacturer the size of the screw, then the screw manufacturer will draw according to the size described by the customer, and draw the screw. The drawings are given to the customer to confirm if this is the case. If the customer does not have a drawing, know the thread diameter and length of the  round head self tapping screws , and do not know the diameter of the head of the screw. Screw manufacturers generally provide customers with a standard screw head si...

Some of the heads made by the  flat head socket head cap screw  are not so round. When they are assembled on the product, they will not look so good. So, how do you measure the roundness of the head of a countersunk head hex screw? There are 2 ways to measure the roundness of the head of a  flat head socket head cap screw . The first method is to place the head of the screw fastener to be measured on the projector, and find the max concentric circle and the min concentric circle according to the actual contour line (see Fig. 1). The difference between the diameters of the two circles is determined value. Fig. 1 Fig.2 The second method is to measure the diameter of four or more (see Figure 2) of the head of the  flat head socket head cap screw  measured by the outer diameter micrometer specified in GB/T 1216. The 1/2 of the difference between the Max value and the Min value is the measured value.

The  socket head cap screw allen key  finished product guarantee load test consists of 2 steps: 1. Implement the specified guaranteed load. see picture 1 2. Measure the permanent elongation produced by the guaranteed load Figure 1 Example of installation of guaranteed load on fastener finished product Suitable for fasteners that meet the following requirements: 1. Bolts and screws with better head bearing capacity than threaded rods 2. The head bearing capacity is stronger than the screw and bolt of the threadless rod 3. No threaded rod diameter d s >d 2  or d s ≈d 2 4. The nominal length of screws and bolts l≥ 2.5d 5. Thread length b ≥ 2.0d 6. The total length of the stud is l t ≥3.0d 7.3mm≤d≤39mm 8. All performance levels socket head cap screw allen key  guarantee load test procedure: socket head cap screw allen key  are fasteners that have passed the inspection of size. Each end of the tested screw should be properly machined as shown in Figure ...

A new product of Miss Song requires several different sizes of  hexagon socket countersunk head screw iso 10642 . Miss Song found Shi Shi Tong and asked if we can customize it. Although Miss Song said it is a  hexagon socket countersunk head screw iso 10642 , the thread size is not the same as the ISO 10642 standard. The thread sizes required by Miss Song are #10-56UNS and #12-56UNS. According to the information provided by Miss Song, we are sure to say to Miss Song that we can produce  hexagon socket countersunk head screw iso 10642 . After knowing that we can produce, Miss Song said that she had to sample 10,000 pcs first. The 10,000 pcs of stainless steel 304 material should be 5000pcs, and the titanium material should be 5000pcs. Can we do this? After learning that we could do it, Miss Song soon paid the money.

When it comes to stainless steel 304 screws, many customers will use the screws made from this material. So what screws can be made with the  304 series ultra coated stainless steel screws , will there be any production restrictions? The wire of the  304 series ultra coated stainless steel screws  is a bit hard, like small and long screws, stainless steel can not do. Before, some customers have customized a M1.5*60 long stainless steel screw to the Shi Shi Tong screw manufacturer. However, due to the material, it is impossible to use stainless steel for production. Finally, the customer changed the material and replaced it with iron. The screw was made. However, if the size is small and the length is not very long (such as M1.2*6), it can be produced using stainless steel. In addition, stainless steel can also produce step screws, long screws (basically from the screw specifications of M3, M4, the length of the screw is not limited), various standard screws....

Screw fasteners are subdivided into a wide variety of threads, so what are the   types of screw threads and their applications ? Machine thread: Generally marked with M, indicating that the thread type is a machine thread. Machine thread are a large category of thread types, and there are also classifications in the machine thread. What are the    types of screw threads and their applications ? One is a conventional wire tooth, which is generally formed by cold heading, and the tail is not treated, and is naturally formed. One is a wire triangle tooth, this type of thread is for the screw to fit better. One is the chamfering of the wire, which is generally for better guiding, so that the screw can be screwed in better. The chamfer generally has two molding methods: one is cold-formed natural molding, and the mold is used in production to make the tail chamfered. One is turning molding. Self-tapping threads: Self-tapping threads are generally indicated by A...

Chris is a buyer of an electronics company in the United States and found a CPT screw manufacturer by searching online. When Chris found Shi Shi Tong, he asked directly if we could produce  chrome plated countersunk raised head screws . After carefully reading Chris’s drawings, we told Chris that this  chrome plated countersunk raised head screws  can be produced. Then Chris told us that he would give us an order for 200,000 pcs, but there are three places to deliver. One is China’s Ningbo, the other is the United Kingdom, and the other is the United States. And ask if we can deliver this way? And attach the shipping cost when you quote. We can do this kind of delivery, and we can tell Chris that we can do it. Then ask the exact address of the three places in Chris, we need to calculate the shipping cost. After reporting the price of the  chrome plated countersunk raised head screws  to Chris, Chris said he would wait for the response from the super...

Mr. Li needs to use a countersunk head screw to assemble his product, but his  countersink dimensions for flat head screws  is not standard. He can’t find the corresponding spot on the Internet for him to use. Therefore, Mr. Li can only go to the factory to produce his countersunk screws. After looking for a circle on the Internet and comparing it, Mr. Li found the Shi Shi Tong screw manufacturer and asked if we could produce countersunk screws. The  countersink dimensions for flat head screws  is not standard. Then we asked Mr. Li if there are drawings, we need to see the drawings before we can confirm. Then, Mr. Li gave the drawings to us. After careful evaluation of Mr. Li’s drawings, the project said that Mr. Li’s drawings needed to be modified before we could produce them. To change the depth of the hexagonal groove of the threaded part to 2mm, do not make 5mm, the limit of the machine can not be so deep. And let us ask Mr. Li if he can accept a l...

Mr. Meng needs a  square drive  flat head self tapping screws . Through the introduction of a friend, he directly found the Shi Shi Tong screw manufacturer. Ask us if we can do it? When Mr. Meng told us that he needed the  square drive flat head self tapping screws , the first time in our minds came out of wood screws. Then we asked Mr. Meng like this. Mr. Meng said that he didn’t need wood screws. He wanted the square drive flat head self tapping screws of titanium screws and needed triangular teeth. And give us his drawings. The size of Mr. Meng’s drawings is very clear, but there are no triangular teeth on the drawings. Mr. Meng said that this drawing is only a reference. In actual production, he hopes that his thread has a triangular tooth at the end. After knowing all the requirements of Mr. Meng, we told Mr. Meng that we can do this  square drive flat head self tapping screws . Titanium is TA1 pure titanium, and ask Mr. Meng whether it is...

When Mr. Yang searched the screw manufacturer on the Internet and saw the information of Shi Shi Tong, he sent an email and asked us how many  metric countersunk head screw dimensions   can be made. Mr. Yang wants M8*720 long screws, M4*13 shoulder screws, M1*5 small screws. These  metric countersunk head screw dimensions  are not the same size. But we can all do it. Then Mr. Yang sent his drawings over and asked if we could achieve the tolerances on the drawings. The tolerances on Mr. Yang’s drawings are very strict, especially the tolerance of the M4*13 shoulder screws, which is basically to be controlled on the lathe. And our production process is mainly cold, and turning can also be done. Then, I asked Mr. Yang if he could accept the tolerances of the step screws produced by the cold heading process, and gave the tolerance drawings of Mr. Yang’s cold heading production. Mr. Yang said that let us give him the price of these two crafts, he wi...