Q:The mirror under the mirror put the toilet glass is broken, the original screw rust deformation, and pulled out. How to rust the screw

The easiest way to change the place to hang the original place to hang a mural

Q:There are some screws, is installed in the electrical, power, electronic products on the material, ask how to correctly install the screws?

After we understand the characteristics of the screw, we can proceed to the next step. For example, we use the hands of a 8.8-wide hexagonal screws, then we have mastered the 8.8 hexagonal screws, the use of screws can be used to wipe some of the oil, so that we can protect the screws, in the invisible Which extended the life of the screw. And we have to use the 8.8-grade hexagon screw in the process, we will be able to know that we need to properly protect the screw head inside the hexagon, to prevent 8.8 grade hexagon screw skid, because we know 8.8 grade hexagon screw More difficult to take out. Then we can think of this screw should be used in what place? We can not put a small number of digital screws on the large industrial above, so that the screws can not withstand the pressure of large industrial above, so we need is to help the screw to choose a suitable place, so the screw on the matter The value of the.

Q:Why the screw thread more closely, spin into the more effort?

Because the length of the screw into a certain, do a certain job. The more tight the thread, the equivalent of the longer the distance rotation, power = distance × force, long distance, the need for force naturally small

Q:Why a screwdriver can suck the screw

Because the top of the screwdriver with magnetic junior high school there

Q:I would like to know the specifications of the two types of screws models, including length, diameter, diameter and pitch, etc.

M3 means that the large diameter (external thread is the outer diameter) is 3. Of course with M3 nut, the length of a move does not include the nut. Thread section length is also another specification. M6 indicates a nominal diameter of 6 mm and indicates that it is a standard pitch coarse thread.

Q:What is the invention of the screw?

Should be the 18th century Mozzley in London invented all-metal precision screw lathe. The following year, Wilkinson made a nut and bolt making machine in the United States. Both machines can produce universal nuts and bolts. Nuts and bolts can be connected together metal parts, so to the 19th century, the manufacture of machinery to build houses of wood, has been replaced by metal.

Q:Was rusty rust, the screwdriver are turning how to do, is a very important thing

Drop a few drops of oil or gently knock around a few times, to the rusty screw drops (to bubble better) gasoline or kerosene, washing the use of oxalic acid also

Q:Very urgent, please help a lot. I do not have any advanced tools, only the screwdriver or something

Drop a few drops of a little bit of lubricating oil, a few minutes ... if it is able to use the hand saw the lower edge and then use the vise to twist the edge to turn out; if it is embedded, is it possible to use a hand drill or a small screw Batch on the nail cap to open a slot, and then almost the same screwdriver unscrewed try

Q:Screws, bolts, screws, what is the difference between the three ah?

Screws are more general. The exact statement should be bolts, screws, and screw caps. Bolts and screws are round bar objects, engraved with equal spacing thread. Bolts are flat head cylindrical type; the screw is the front is pointed like a nail. The bolts must be used with the screw cap, or on objects that have been threaded. Screws are used in relatively soft or relatively thin objects, when used with their own thread side of the rotation side of the forward drilling. The threads on the bolts are relatively shallow without the edges; the threads on the screws are sharper and the threads are deeper, facilitating drilling into the objects. Most bolts and screws require a simple and easy tool - the screwdriver.

Q:What is a self-tapping nail? Is it used? What are the characteristics of the shape? What is the difference with ordinary screws?

Ordinary screws need to be fitted with nuts, or with the tolerance thread. Self-tapping nail body with self-tapping thread, you can directly into the wood, walls and other fixed use.