What if the screw is not unscrewed. How to unscrew the screw with torn slots? Impact on nuts and high temperatures bolts

When the screw in the thread scrolls normally, it is unscrewed with a scratch or screwdriver.
But how do aircraft with unwanted screws are twisted?

Screws can go into threads due to corrosion, can be silent due to influence when painting (the paint snaps down under the screw head and dry out).

For reasons of minimization of damage to the surrounding elements, the screw is best to try to unscrew.
If the screw does not turn with a scratch or screwdriver, you must try to prevent slipping tools from the slot. When he jumps out, it usually damages the slot on the road, and the screw is no longer transmitting that torque, as with an intact slice.
Therefore, it is important to keep the slots on the screw head and therefore the bit or dye must correspond to the size and type of screw slot and not hang out in it.

If you try to unscrew the screw and it does not turn, then it is not necessary to rape a hundred times the same way.
We must try to press the tool and pass the maximum possible moment.
For pressing the dumping is no longer very convenient, and I use Kohlotov or ratchet with long handle (per square 1/2 ").
There are copulyrotes of meter and longer with two handles half meter. If it is convenient and smoothly pressing the screw, then it happens, it is possible to stronger the accurate screw. We now have no such.

To increase friction in the Slice, we have a special paste:

Judging by the sensations, it consists of a small abrasive powder with some kind of liquid binder.
It is applied to the slot of the screw, press the colander or ratchet, and try to turn.
Usually it turns out much better than without pasta.
The blue drop on the left below the tube is a bit of that paste.

Pasta really well helps keep the tool in the slice.
I found such a paste with Liqui Moly - it is the article 3811. They write there that it increases friction ingur.
Especially efficiently use it together with the bits that have notches on the working surfaces.

If this method does not help, but the slots are still not completely torn, we start working out from under the stick.

This, in fact, is a lever that allows you to significantly increase the pressure on the unscrewed screw, and do not allow the bite to jump out of the slot.
This device works only in the case when there is something to rest.
For its use, you must have at least one twisted screw near the problematic.
In the thread of the outlet screws the threaded transition:

And at the other end of the adapter turns the lever hinge:

(in the lower left corner of the pictures)
Then we sum up the movable part to the screw and insert the bit in the cartridge to fit the screw slot.

In the slot, it would be nice to impose a drop of that pasta.

Strongly press the other end of the lever, and turn the hexagon with a bat with a horn key.
Usually there is nothing to oppose such scrap with such scrap, and they are unscrewed.

Fixes based on this principle may have different designs and different efficiency.
I remember in the airline "Russia" was the adaptation of such a principle of operation, but much less; called Vera Quick.

You can still sprinkle on the WD-40 carving, but in our work to access back side The screws usually need to remove the panel that he holds :)
I sometimes climb a hammer through the head of the screw. By doing so, I hope to slightly move the screw along the axis and break the dried paint under his head. I do not know how efficiently it is.

If these measures do not help, and the slots are torn, the next step is to use the extractor.

In the screw head right along the axis, the hole is drilled by a slightly smaller diameter than the screw itself.
Then such a gorge into this hole turns the extractor.
It has a left thread with sharp edges.

When rotating a turn counterclockwise, the extractor is screwed into the hole and pulls the screw to the twisting.
Usually it helps to unscrew it quickly.
It is necessary to work well-sharpened rolled metal and new extractors - then problems usually do not happen.

When the tool is bad, it happens, Kern helps.
I drill a little, preferably deaf, hole in the screw cap directly near her edge.
Then put to the hole on the tangent to the circumference of the Caern Hats and Bew on him, trying to move the screw against a clockwise arrow.
This method is uncomfortable (the core breaks), and if there is a normal tool, it does not reach it.

As the most extreme way to eliminate the combing screw, you can drill its hat.
It is not very good, as you can easily damage the panel itself, which the screw holds. And the panels are in most plastic.
After removing the panel, you can try to unscrew the screw, grabbing the ticks behind the sticking piece of its body. This is not always possible, as approaches are very inconvenient with both facial and back.

In my experience, the screws on the A320 are crying much less frequent than on B737.
Especially sad it is about 737 classics. I think, in many respects because of the age of such aircraft. It happens that up to a third of the screws on the panel cannot be unscrewed simply with a screwdriver or screwdriver. And the panels are rich on the screws :)

Probably, experienced locksters know and know how many other ways to unscrew the screws, but I described those that used himself.
And yes - in my practice, the impact dummy never helped unscrew the screw.

Fixing screws of any products, convenient and reliable way. However, almost everyone who at least once twisted or unscrewed the screw with a semicircular head or a secret head out of the wall, the board, came across a problem, how to unscrew the screw if he was torn to a crusader under a screwdriver. Let's try to figure out how unscrewing do more efficient.

Types and types of screws

Screws are cylindrical rods with an applied screw groove and an formed head. Hardware is made according to GOST 1144-80, GOST 1145-80, GOST 10619-80, 10620-80, 10621-80, DIN, ISO.

Two main types of screws: self-tapping ("self-tapping") and, in fact, "classic" screw. When the metric designation is most often used its diameter, length (for example, 5x35 mm, the Self-cutting length is 35 mm, a diameter of 5 mm).

They are classified by the design of the head and the execution of the slot under the screwdriver:

• With a secret head (screw with a flat head);
• With reduced secret;
• With hemispherical;
• With pressshaba.

All the above types can be made with a direct slot, with cruciform, with the TORX slot (in use - "asterisk"), an internal hexagon and a number of others less common. Also possible combinations of slots (for example, direct and crucible).

Separately, you can select screws screws with six, octalized head "turnkey" (roofing screws), they can also be made with different slots.

There are also screws with special heads (screw ring, screw hook, screwpipe, furniture screws (confirmates, although in logic it is more correct to name - furniture screws), etc.

According to the type of threaded part, it is also divided into types of types, due to primarily use and fastened materials (self-tapping screw, screws for drywall, screws for shallow household appliances), In this article we will not dwell on this classification.

All hardware can be made as coated (chemical phosphatated, galvanized), so without it.
Why the screw with a flat head is broken or with a hemispherical head.

More precisely, the slot is broken in his head. The reasons for the face of faces can be quite a lot, we will analyze the main of them:

1. The use of poor quality, inappropriate in size (type) or a worn tool;
2. The application is insufficient (and as a result, the population of the tool from the slot) or excessive effort during wrapping or turning;
3. The use of self-pressing self-appointment (an attempt to screw in inappropriate material, without preliminary zero, when it is required, etc.);
4. Corrosion in the product, both head screws and screw screws (so-called "zakisania")
5. Incorrect overtaking ("hammering").

Minding

So, how to unscrew the screw universal with a secret head or self-tapping screw with torn faces or worse than hats without a hat at all.

The first thing you need to do is inspect the tool with which it is turned out and replaced it to suitable. The sting of the tool should be tightly into the slot and not worn.

To reconcile the screw, the screwdriver must fully fit the shape and size of the slot. If the replacement did not give anything, we use other ways. Self-tapping screws Most often, it is possible to unscrew using a thin leaf rubber, having routed it between the screwdriver and the slot.

When unscrewed from the board and other wooden products, it is effective to hit the screw of the screw with the subsequent tapping on the screwdriver at the time of the effort. If the screw is not fully wrapped with a semicircular head (protrudes over the surface at least per millimeter) or the design of its head allows you to do this, then you can try to pull it out of the passage or gas key.

Several droplets of the brake or lubricating fluid, kerosene will make a self-sucking scroll. You can warm the hardware, it will expand and deforms the surrounding materials, and the cooling will allow you to turn it out.

It is possible to use adhesives (superchalters, "liquid nails", "cold" welding, and if time is allowed, then epoxy compounds), soldering or if allowed parts, then welding. If the self-tapping screw did not start twist, proceed to radical measures.

Joiner's tricks. 10 methods for extracting torn screw.

Protecting faces

Regardless of the type of head and the initial type of the slot, you can try to unscrew with a flat screwdriver. To do this, it is necessary to drench in the head, with the help of hacksaw for metal or "Bulgarian" straight slot.

It should be borne in mind that the slot depth should not exceed half the height of the head, otherwise there is a risk of its destruction. The use of diligence in conjunction with the methods listed above will increase your chances.

Use of extractors

Another way to unscrew the screws is the use of extractors. To do this, it is necessary to select the drill of the diameter of which less than the diameter of the threaded part of the screw, scroll the hole in the head, cut the left thread in it and, applying conical extractors, unscrew the methomez.

This method is suitable for filtering fasteners with all kinds of heads. But it is not suitable, to twisting the screws, because They are manufactured hardened.

There are slotted extractors that are a six-sided puck with a slot that is located on the inner channel instead of a thread. The slotted extractor dresses on the head, while the inner slot is screwed into it.

Unscrew the screws with torn faces

The screws with torn faces or with a torn cap is easiest to turn off the applied heating or by welding (if the turning force is not very large, then gluing) to the remaining part of the nut or lever or perform propyl.

How to unscrew the screws?

If all of the above results are not allowed, the fastener is very rusty, you can drill it with a drill along the metal, suitable diameter and wrap in its place larger. To drive the screws, the drill must be taken carbide. Hexagon head, practically does not break off. And with its breakdown, you can use the tips above.

How to unscrew the torn screw how to unscrew the screws with torn faces

This is a very common problem when the slots are stepping under a screwdriver from a screw, screw or self-press.

This may happen for various reasons: incorrectly picked up a screwdriver, the effort was not correctly attached, and TP. As a result, it would seem that the situation is almost hopeless and will have to make a lot of effort to twist for example a screw with linked faces.
It is not always so difficult as it may seem. I will show a very simple way to turn off the finished screw. And for this you will not need absolutely no wisdom materials and tools.

Easy way to get out the linked screw

All you need is a small piece of rubber or rubberized material. Suitable: Medical harness, rubber from a bicycle or machine camera, rubber ball and TP.
In general, cut out a small rectangle from what is. We put on top to the jammed screw. Rejoice in a screwdriver and sneaks begin to unscrew.

Yes, it's so easy! The main thing is to send more pressure on the pressure on top of the self-tapping screw.


After several revolutions in the rubber band, I can printe a face and a screwdriver will start scrolling. To do this, put the gum on the new surface and continue to unscrew the screw further.
I did it with a harness and a camera from a bike, folded twice. The result is excellent, everything dismisses without problems.


It was the easiest way to unscrew the linked screw without the use of drilling and other cunning devices. Also the fastest. So friends, take advice on arms.
Watch the video
If you do not quite understand how to act - watch the video.

The problem of the jammed screws under the crusade screwdriver is long known. How to get out of such a situation and twist the broken screw exists a little solutions. I will only offer you seven who had to use personally to me.

How to unscrew the linked screw?

Unfortunately, there is no almost universal solution. And each presented way is good for its situation. Therefore, everything is coming in comparison and applies to a specific individual situation and its screw.

First way: we use harness

You will need a piece of dense rubber. It may be a segment of a medical harness, a piece of chamber from a bike or the like. The more denser and tougher will be the material, the greater the output of the twisting can be created.
Berm Screwdriver, as similar to the groove of the screw.

Take the harness.

We put the harness to a screwdriver or bit and insert it all into the linked head. Next, with simultaneous pressing and rotational movement, try to twist the screw.

Compectedly applied force can be discerning the screw with a significantly screwed force.

The second way: how to unscrew the screw using a drum screwdriver

If you have a shock screwdriver (or ask your friend), you can use it.

Of course, the screw is not entirely unscrewed, but it is possible to weaken the connection substantially, and then we use a conventional screwdriver.

Third way: use a special bits for bolts with rapid crosses

Since the problem of the messed faces is not Nova, then the market for a long time for sale. For example, a special bit for discerning the linked bolts.

Insert it into a screwdriver or screwdriver and disulte. Acute edges under the right angle Perfectly come into engagement and the screw is amenable to rotation.

Fourth way: extractor

Special tools intended for repairing broken screws, studs, bolts and the like - applies extractor. It works the same as a bit in the example above, but with a little difference.
Insert the nozzle to the screwdriver and unscrew. It is possible to pre-make it necessary to select an extractor for recess, since the diameters of the heads are different.

Fifth way: unscrew the left drill

On sale, besides us all the usual drills, there are also drills with the left stroke of the spiral. Such a drill can be used as a tool for discerning a broken screw.

Sixth way: we use core

This method is well suited for unscrewing the screws of small sizes. Take the core, we rest in the edge of the cap at an angle of about 45 degrees and hit gently with a hammer in the direction of turning the hats.

Kern in mind its sharpness has a good engagement, in view of which the screw is more likely to be dismissed.

Seventh way: take a hammer and chisel

The method has become classic, but it is problematic to use it for small screws. Take a chisel or chisel, we remove the cap in the side of the hat and gently hitting the screw. The main thing is to move the hat from the place, and how it will seem, the winding can be continued by the pliers.

Friends will be very cool if you share your ways how to get out of such life situation. Thanks for your attention! For more information, see the video.

You will need

• - metal brush;
• - aerosol WD 40, kerosene, turpentine, rust cleaner or brake fluid;
• - Screwdriver slotted or cross;
• - shock screwdriver;
• - a hammer;
• - a file or a feet;
• - Drill with a set of drills, tap;
• - special tool ALDEN 4507P;
• - Protective glasses, gloves.

Instruction

Do not try a rusty screw with a secret head or bolt without prior operations. So you can simply disrupt the thread, and with such an intention, how to unscrew the screw or how to unscrew the bolt, do not cope. Metal brush Clean the details of the threaded compound from rust. Next, process them with WD 40 aerosol, turpentine, kerosene, rust cleaner or brake fluid.

It is possible for better exposure to these substances to richly moisten with them with a rag and leave it on the fastening minutes by 5-10. If the result did not achieve, again apply a well-penetrating lubricant WD 40 to a threaded connection. Then unscrew easily problem Screw With a secret head or other threaded connection.

Try when unscrewing a disobedient screw with a secret head or a bolt as it were to swinging them from side to side. In this case, the lubricant will be easier to penetrate the threaded connection. Consequently, your attempt to perform such a task how to unscrew the screw or how to unscrew the bolt will be successfully solved.

If the hilt screw is strongly encouraged, use the appropriate slotted or cross screwdriver and try to twist it, gently hitting the screwdriver handle with a hammer. Can be used shock screwdriver. Insert it into the slot and hit the hammer along the screwdriver cap. The screwdriver mechanism will work and check the screw. True, this screwdriver is expensive.

Try to warm up the stubborn threaded connection, using the soldering iron, boiling water, etc., at high temperatures, scale are destroyed and preventing unscrewing fasteners. Just try to unscrew the details of the threaded connection, it is necessary immediately, otherwise they will be swallowed that it will complicate the further unscrewing process.

If the details of the threaded joint have become unusable as a result of an external aggressive impact or were originally poorly, try learning them as follows. We weld some lever or nut to the protruding parts of the screw, bolt, or and try unscrewed by one of the methods listed above.

Drive very carefully, without damaging the threads, damaged parts. First, make a file or supfil for a more accurate curved. Next, drill a smaller size drill a hole. Make a new thread, insert the bolt and remove the remains of the fastener.