Shenzhen Shi Shi Tong Metal Products Co., Ltd

In common screw production, it is to make a head-first commonly, rub tooth again. Then the  extra long stainless machine screws  are also produced in this way?   Generally, when the length of the screw is more than 100mm, the material is stainless steel, thread type is machine thread, can be called  extra long stainless machine screws . Their mode of production is different from the usual cold heading of screws. Because the length of the screw is too long, there is not so long spare space in the machine for cutting. So they need a separate cutting machine to do the cutting. After the completion of cutting, then the cut material into the debugging of the good closing machine to start. If the screw is a cup head hexagon, then it can only make the cup head shape, the hexagon shape is not hit, need to make the cup head shape, then take the hole, after drilling the hole, then the hexagon shapes out. The reason why the cup head hexagon socket extra long stainless steel mac...

Now, the concept of customization has entered the minds of many people. Even screw fasteners can be customized. Then, the head size of   long brass machine screws  can be customized? The head size of long brass machine screw cannot be customized at will. Why is this?   The following may occur if the head size of the  long brass machine screws  is customizable. One is that if the screw is made cold heading, the head of the screw may not line up. This is because materials have different coefficients of expansion for forming screws, and the machine also has requirements for the range of molding. Therefore, if the size of the head is set too large and too thin, it may not be able to form. The second is to consider the problem of   long brass machine screws  in actual use. Sometimes, there will be a screw turned, the head broke. One is because of the material, the other is because of the design of R Angle under the head, too small will cause the screw head ...

When customers order a newly developed screw, they will be very concerned about the cost of the mold for the screw. For example,  6 inch long machine screws , if this screw is to be produced, do we need to open the mold? Whether the  6 inch long machine screws  need to be molded also depends on the production method. If the screw is cold heading production, the mold is needed to produce the screw. So cold heading production depends on whether the screw manufacturer has produced similar screws, if the screw manufacturer has produced similar screws, then basically do not need to open the mold. But if it is produced by CNC, then  6 inch long machine screws  will not involve the cost of the mold. Because CNC production is directly through the material car into the shape we need, so there is no need for a mold. Therefore, if you want to determine whether the  6 inch long machine screws  need to be molded, you need to send the drawing of the screw to the scr...

In hardware fasteners, the production of screws is generally divided into CNC production and cold heading production. The screws produced by CNC do not need molds, while the screws produced by cold heading need molds, which also involves mold costs. So if it’s cold heading, under what circumstances will the screw need to be moulded? Such as  long socket screws black . Lead to  long socket screws black  need to open mold, one is to see the screw manufacturer, one is to see the buyer.   The screw manufacturer mainly looks to see whether similar screws have been produced before, and whether the long hexagon socket screw required by the customer can share the mold. If the mold can be Shared, then there is no need to open the mold. Buyers to see if there is a design logo on the head of the  long socket screws black , such as this is the need to open mold. No screw manufacturer will have the logo required by the customer, and the screw manufacturer will not expect tha...

The bending of  8 inch long machine screw  should be divided into whether it is produced, bent or straight, and whether it is caused by other reasons. So what’s the solution? If a  8 inch long machine screw  is bent, then the wire is bent when it is fed. If the wire is bent, you need to make the cutting die, the cutting die and wire gap with a little bit smaller, or get a straightening machine on the side, while making straightening. If there is no bending when it is produced, but the bending is caused by other factors, if the long screw has not been shipped to the customer, you can consider taking the long screw straightening. But some have no way to take straightened, in this case can only be in the sequence of production when pay more attention to. However, if the screws have been shipped and are bent during transportation, you can consider aligning them internally or find a nearby manufacturer that can align them. If you need to customize  8 inch long machin...

In the  extra long machine screws   we see, the threaded parts seem to be half – thread, and full – threaded ones are rarely seen. Is it because full – threaded screws cannot be made? As a matter of fact, we can make a full thread with the  extra long machine screws . The reason why the full thread is so rare is that it costs more than half thread. If it is a screw with half thread, then the screw can still be rolled out of the screw machine. However, if the screw is full thread and the length of the screw is so long, such as M6*720HM, the screwing machine can’t do it. Because there is no such long tooth plate, the tooth can only be rolled out to make the thread. In addition, if the  extra long machine screws  are full thread, it will take more time and effort to screw it in, because the longer the screw, the greater the resistance and the more difficult it will be to screw. But if it’s a half thread, you can save some time and you won’t have as much resist...

A lot of times, when we need to customize something, we need the buyer to provide a copy of his drawings. With the drawing, we can know what type and effect it wants, because the drawing can objectively express what the customer needs. Even the screw fittings are no exception, so can we make the   extra long machine screws  without drawing? If there is no drawing for  extra long machine screws , we need the customer to provide us with the sample. If there is no sample, the customer needs to provide the desired material, surface treatment, size and other information of each place to the screw manufacturer, and then the screw supplier can make drawings according to the customer’s description and confirm with the customer whether the screws in the drawings are what the customer requires. Screw fittings are not the same as things like clothes. If you’re not sure what kind of clothes you need, you can also ask someone to recommend the right clothes for you or design the c...

No matter what type of things, in the delivery through express transport, generally need to choose the price of the product according to the weight of the freight company to transport. Then, how to calculate the weight of  extra long flat head machine screws ? Formula for the weight of the  extra long flat head machine screws : density ×3.14× diameter × length × diameter × length + head material for countersunk head The section of “material density ×3.14× diameter × diameter × length” is to calculate the weight of the rod. If the extra long countersunk head screw is full thread, then the above formula can be followed. But if it’s a half tooth, you have to take it apart at the bar. If the threaded part needs to be calculated separately, the unthreaded part needs to be calculated separately. The reason for this calculation is that each customer has different requirements for the length of the thread, as well as for the diameter of the part without thread. This will cause th...

Sometimes when we look at the end of the  titanium machine screw , we can see that some of the screw ends are flat, and some of the screw ends are not flat. Why is this? One is the production of the  titanium machine screw  model is not the same. Some screw structure is relatively simple, the use of a single mold machine can be produced. We all know that no matter what type of machine, there are scissors for cutting at the beginning. Single – die machine scissors cut out of the material tail is not flat. Because the single – die machine scissors are responsible for cutting the place is not flat.   If the  titanium machine screw  is more complex, then you need to use a multi-station machine for production. The cutting area of the scissors for the multi-station machine is flat. So the end of the screw produced is flat. Two,  titanium machine screw  are made by a single die machine, but the scissors are customized, and the end of the material is cut ...