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

That you can break before and after some of the expansion do not drip the oil or else you use the pliers light slippery when there is an empty time with a word screwdriver to feel almost when the pliers can be used

Q:What is the meaning of the screw and the 4 and 8?

Screw should be written on the 4.8 bar, 4.8 on behalf of the strength level

Q:M4.8 * 25 What does it mean in screw size?

Nominal diameter of 4.8mm, the length of 25.4.8 should be more from the tapping, should not use M said, M generally said machine thread M4.8 is the screw size 25 is the length of the screw diameter 4.8mm, length 25.

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?

You say is a self-attack nail with a screwdriver twisted into the picture is not self-tapping is not used on the board, which is used on the expansion tube, to change the nail or wood screws, or direct use Nail nail

Q:Thank you for your support

If you ask this question if it is to lock up, then want to effect a little better, it is recommended to use double-sided tooth lock washer, I can give you the price of understanding, Baidu my user name!

Q:What is the name of the screw (fastener)?

By hole type: a. Through hole b. Blind hole Material: a. Iron (Fe) b. Aluminum (Al) c. Stainless steel (sus)By color: a. Colorful (character) b. Blue zinc c. Black zinc

Q:What is the difference between gaskets and seals?

The washer is divided into: -C, flat washer washer -A and grade C, grade -C large washers, washer, flat washer, flat washer, chamfered - - a grade steel structure with high strength washer, spherical washer, taper washers, square taper washers, steel I-beam, square taper washers standard type spring washers, spring washers, light heavy spring washers, lock washers internal teeth serrated lock washers, inner and outer teeth lock washers, serrated lock washers, single ear washers, ears washers, external tab washers, round nuts with washers.

Q:How to use washer, gasket, o-ring "

Different purposes, the installation position and the corresponding flange are different, if this is how to choose, advantages and disadvantages, too much information

Q:Is it hard to heat the fasteners?

Fasteners are a kind of standard parts, and their requirements are often higher than other standard parts, but heat treatment is better

Q:I would like to ask what is the standard gasket and gasket in general what material?

Carbon steel, if there are 45 steel, 65 manganese, that is, medium carbon steel, low carbon steel.