The expansion screws are a kind of parts and fasteners commonly seen in construction construction. It is a special thread connector that is used to fix the pipeline (support, tube, frame) on the wall, floor, and column.Lets learn more about the expansion screws together.
How to use expansion screws
First of all, you must choose a alloy drill with the same diameter as the expansion screws tightly. Install it on the electric drill and then punch the wall. The depth of the hole is the same as the length of the bolt.Then go down the expansion screw kit to the hole together. Remember, do not twist the nut. Otherwise, it is difficult to remove the bolt into the hole when the hole diamond is deeper.Finally, tighten the nut, then unscrew the nut, then align the fixing part of the holes on the bolt, put it on the outer pad or the spring pad to tighten the nut to make great achievements.
Snewal screw price
The expansion screws are generally sold in hardware stores, and the price will also be different due to the different materials.The price is generally around eight or nine yuan to ten yuan.
Principles of expansion screws
The principle of expansion screws is to use wedge slope to promote the expansion to produce friction, thereby achieving a fixed effect.It is generally used for fixation or connection of protective fences, puffs, air conditioners, bookshelves, wardrobes, etc. on cement, bricks and other materials.
How to disassemble the expansion screws
First take off the screw cap, knock down the middle of the middle of the middle, let it loosen, and then hold the iron sleeve outside the pole to pull it out and pull it out.
How to install the expansion screw
First look for the impact drilling hole. Note how large the expansion screws of the pores are installed.Then put the plastic things in, and then drill a hole that should not exceed the screw -sized hole through the hole with a screwdriver on the plastic hat on the pore of the screw.Note that if the plastic hat is required, the holes are drilled, otherwise it will fall off.
Expansion screw specifications
The expansion screws are used more in the country.The formal specifications of the sleeve type are M1XM2XL, M1 represents the tooth diameter, M2 represents the outer diameter of the tube, and l represents length.Such as m6x8x40.But Ls representation method is different. Taking the flange nut sleeve gecko as an example, it is a nuts to parallel with the tooth pattern, and then measure the flange surface to the cone screw with a caliper.

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