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FAQ

How much is a screw?

To see what screwdriver, if it is a small screw, and then you buy more words, a single cost may be a few cents, if it is a single purchase may be more expensive.

I'm talking about another thing

crews for the daily life of indispensable industrial necessities: such as cameras, glasses, watches, electronics and other small screws used; television, electrical products, musical instruments, furniture and other general screws; as works, construction, bridges are large Screws, nuts; transport equipment, aircraft, trams, cars, etc. are the size of the screw and use. Screws have an important task in industry, and as long as there is industry on earth, the function of screws is always important. 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.

No cross screwdriver, how can the screwdriver screwdriver?

If the head of the screw is fully exposed, use a large pliers to tighten the screw head from the side and turn the screw to the right.

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

This kind of screw called what I really do not know its name, the use of the place to see really not much, I see the place are generally used in machinery and equipment above, as you said what role, my personal point of view is To prevent slipping, because it is the head of a large slip wire, need to hand to adjust to the correct position to fall off, know that so much, not professional, Oh ~ hope to help you! The

This screw ye use, and how to use next to the cover

This is also the expansion screw. First make a hole, put the plastic into, and then on the top of the screw

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

The specific need to check their own standard parts manual to judge

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be connected together metal parts, so to the 19th century, the manufacture of machinery to build houses of wood, has been replaced by metal.

Screw M is mechanical teeth, tapping is what?

Screw M is the size of the screw, can not use the nominal judge whether the screw is a mechanical screw or self-tapping screws. Metric tapping screws are marked directly above the name Tapping Type.