Q:How much is a screw?

Let me tell you: a box of screws 500 yuan, a box of 600, how to calculate how much money? Fasteners consultants Yu Wenlong that a box of screws are the same standard, the same specifications, the same material screws, A 500600 = 083 yuan, about each is 083 yuan,

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:How is the screw nailed to the wall

Use a slightly larger nail than the screw into the wall. After unplugging, use plastic expansion bolts and then screw the screws. The disadvantage is that the strength of the cement is different, and some pull the nails will not care when the wall will tear off the hole.

Q:Is the tail screw? If it is mainly used in what place? If not what are they different?

Normally, it should be called drilling screws, screws are the use of the object of the circular circular rotation and friction of the physical and mathematical principles, step by step to tighten the tools of the tools. Drilling screw is the front of the screw with self-tapping the head of the wood screws. Screw is thousands of years of people in the production of common inventions, according to the application field, it is the first major inventions of mankind. Drilling screws are in recent years people's new invention, also known as self-tapping screws. Main steel for connecting between the need for ordinary or high-strength bolts, plates with self-tapping screw connection. It can not be used for metal and metal bonding.

Q:Inside the hexagonal screws, rather not down, it may be too much screw on the screw too tight has been bad 3 screwdriver screw is too small also one-half of rice grain please help think about ways

Suggested the following methods: First, to the market to sell gold groceries to buy sets (about 5-6) Hexagon screw wrench, about 5-6 dollars. Second, with a lighter to paint the surface of the paint burned, and then drop a few drops of oil, and then the appropriate size of the screwdriver twist to see if it can!

Q:How to look at screw models

That is, there are certain specifications of the national standard, such as: M6, M8, M10, M12, M16, M20. Which 7911131415171819 there is no. Wrench it as such as: M6 wrench, M16 wrench and so on.

Q:Screw M is mechanical teeth, tapping is what?

M is a mechanical tooth from the tapping is T

Q:A tightened screwdriver has been damaged, that is, the cross into a round mouth, and now I need to get it out for a new one, is there any way to take it out?

First find a good tool ... tiger pliers ~ and the like ... and then forced it ... I was the last time so get ... good results ~ also exercise

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

The screw is an incorrect call, non-professionals on the threaded parts collectively, in the industry without this call. In the fastener industry, in fact, screws and bolts are not a strict sense of the distinction. However, there are two ways in the industry to distinguish between screws and bolts: 1. According to the structure, the so-called twist structure, refers to the screw / bolt used to put the wrench above the place, that is, In some systems inside, the external pull the structure of the external screw rod-shaped parts are all called the bolt, on the contrary, will pull the structure called screw. This is a more obvious example is the Chinese national standard fasteners, for example, GB5782, GB5783 (a half thread, a full thread), the hexagonal bolts, The Because they are hexagonal structure, so, in the standard name, all called: bolts. 2, according to whether the product has a non-threaded bar features to distinguish. This is also a relatively wide use of a classification method, are generally so distinguish between bolts and screws. That is, if the part of the product other than the head is threaded, this part is called a screw. On the contrary, if, in addition to the thread but also has a light rod and other characteristics, called the bolt

Q:How does the screw twist?

The screw does not come out is generally caused by rust. Welding handle or heating is a commonly used method of disassembly, but the small size of the screw is not applicable; preferably with kerosene infiltration for several hours, and then use the vibration method of twisting