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: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:What is the effect of the screw?

Screws are also called screws, and the screws can be divided into three categories: machine screws, set screws and special purpose screws.

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:How to look at screw models

When you buy a certificate. The The Written above. The The I do not know any other way

Q:Engineering argument, usually referred to as the M3 screw, M refers to what is the meaning? The Please instruct the engineering staff.

M is the large diameter of the screw, the diameter of the screw top of the bolt, or the diameter of the screw bottom of the nut

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:Please understand the friends of the self-tapping nails, screws, nuts production process, is the manufacturer's process. The more specific the more detailed the better

According to the screw nut and thread size custom the corresponding mold, mold is done into the material, then the head - rubbing - surface treatment - the packaging is complete.

Q:Screws are not slopes.

Can not simply say whether it is a specific analysis of specific issues

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

How much of the screws? You can consider changing the size of a wire