Q:How much is a screw?

If the inside of the screw is not the same specifications, the same material, even if not how much money out of a.

Q:I'm talking about another thing

Screw is the use of objects of the circular circular rotation and friction of the physical and mathematical principles, step by step to fasten the tools of the tools. Screws are the general terms of fasteners, daily oral language

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:How did the screw twist?

maintenance personnel with a large number of screwdriver three five in addition to get the two, he told me that the screwdriver should be used by the small model to the large model too, of course, I did not let you frequently change the screwdriver, but began to have too large Easy to spend, began to use a small easy to spend. Large screwdriver only after the screw has been spent on the stage.

Q:Also known as screw nails, I want to nail on the board, but there is no way to nail into the hard, how nail?

First with a small hammer and other heavy objects into the wood a little, and then a screwdriver, on the line, try

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:What is the size of the screw for the wall power switch installation

General use M4 * 25--35 screws, the best installation of the first screw to the oil try to screw about, so easy to install.

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

There are no hexagonal head but the middle of the screw with the middle of the pole known as the double-headed bolts (studs), the whole body is screw called screw, in addition to countersunk head neck bolts, T-slot bolts, anchor bolts, U-shaped bolts. Bolt tightening device for the torque wrench, the opening size of the various shapes of fixed wrench, the opening variable size of the movable wrench, hydraulic tight bolts need hydraulic pumps and other accessories. In short: fasteners with screwdrivers and hexagonal tools are screws, and fasteners with wrenches are bolts. Note: can not be distinguished by the size and length of the nominal diameter. For example, a M48 long 300mm cylindrical head fasteners, GB / 70.1-2008 standard will be defined as hexagonal head screws, not bolts.

Q:What tools are used to remove the screws, the two lines are grooves, the middle of a paragraph is convex

There is a multi-component tool that specializes in handling such screws.

Q:How did the scrHow did the screw become round?ew become round?

(1) in the screwdriver head pad things such as double-sided adhesive, non-woven fabrics, etc. If there is no condition, then the paper can be, so you can increase the friction. (2) with a small amount of 502 glue into the screw hole, and then screw into the screw, and so the glue after the solid tip and then use the tip of the screw to pull out the screw (only the screwdriver is not afraid of causing screw teeth). (3) fruit screw cap exposed, you can use the tip of the clamp clamp screw cap after the screw. (4) the general mobile phone screws are metal, the case is plastic, not screw down when the time. You can use the tip of the screw into the screw cap, the metal screws to screw the plastic around the plastic melting, with the tip of the clamp clamp, gently pull out! You can also force down the screws about 1 mm (be careful not to engage in the chassis), you can solve the problem of loose screws. (5) so little the screw is not easy to get, my father had to repair the original bike screw method, with a small electric drill in the middle of the screw to play a not deep hole, and then find an anti-silk tap into the (must Anti-wire tap, it is difficult to find, to go to a large measuring blade cutting shop), you can unscrew the.