The edges of the bolts become rounded over time, which especially happens with soured and rusted bolts that cannot be unscrewed. Trying to do this, people often additionally turn the edges themselves, rendering not only the bolt heads unusable, but also the keys they used to unscrew them.
There are several ways to unscrew almost any bolt, regardless of the degree of rust and the condition of the edges. Using these methods, you can unscrew any bolts, even those whose heads have been torn out, but a piece of the bolt remains in the thread. We’ll talk about these methods today.

Will need

What you may need to unscrew any bolt or nut:

• a set of keys of different design solutions;
• liquid key or wd-40;
• drill with drills;
• extractors
• impact screwdriver;
• impact wrench;
• electric welding machine;

If you have all this, you can unscrew almost everything!

Traditional methods:

If traditional methods do not help, then it’s time to purchase a special tool with which you can unscrew anything!

5 best ways to unscrew a bolt or nut!

1. Special extractor heads. The internal parts of these heads have spirally twisted grooves, and the hole itself is cone-shaped. In order to unscrew a bolt using such an extractor, you need to drive a socket wrench onto the head of the bolt and turn it! The taper allows you to clamp the bolt head, and the spiral grooves pick up the edges and unscrew the bolt. Then the bolt itself will have to be knocked out of the key.

They can also have a different shape.

2. In second place are ring wrenches with special shaped grooves. The principle of operation of such a key coincides with the operation of extractor heads.

3. In third place is an adjustable wrench, which also easily unscrews bolts and nuts. Distinctive feature such a key consists of a large clamping force due to the lever rule, as well as wide range sizes, since the key is sliding.

4. Percussion methods. Here you can use a classic set of a hammer and chisel and special screwdrivers with a solid shaft adapted for impact.

First, a groove is knocked out with a chisel or screwdriver, and then the bolt is unscrewed by striking this groove. The method can be simplified if you use a special percussion instrument. When you hit the back of such a hammer screwdriver, its head produces a rotational impact on the bolt. You can also use a wrench to simplify the work, and you can also weld a nut to the damaged bolt head if there is open access to the unit being repaired.

The impact screwdriver also proved to be no worse.

5. The fifth method is useful for unscrewing the remaining bolts remaining in the threads after the bolt head has been completely torn out. For these purposes, extractors are sold that are driven into the hole. It is enough to drill a small hole into which the extractor is driven.

You can also use a left-handed drill.

Now it is enough to take any key to unscrew the extractor along with the rest of the bolt.
If the bolt is not broken, but its head is almost completely destroyed, then, if available, you can use welding by welding the nut on top.

Conclusion

Using these methods, you can unscrew almost any bolt, its fragment or nut that seems impossible to unscrew! But when working with any of these tools, you need to follow safety rules, working in gloves, glasses and overalls.

When performing repair work, sometimes the question arises: how to unscrew a bolt or screw with torn edges. This problem has several solutions, knowing which you can unwind almost any hardware. Even if you overdid it and tore off the head or broke the stud, there are ways and tools that allow you to unscrew the broken fasteners.

It is better to prevent any problem than to solve it. Therefore, if you have applied sufficient force and the fastener has not moved, you do not need to continue until you completely damage it. Better do the following:

The above steps will not be superfluous in the case when you decide how to unscrew a bolt with torn edges.

Methods for removing a bolt

Below are the most effective ways unscrewing damaged bolts and screws.

With damaged edges

When deciding how to unscrew a bolt with stripped edges, you need to consider whether there is access to it, its location, and what tool you can use. Based on these factors, You can use one of the following methods:

In difficult cases, in order to achieve the desired result, you need to combine several methods. Therefore, first assess the situation, decide how you can unscrew the bolt, and only then get to work.

With the head torn off

Very often, when disassembling old threaded connections, you can not only damage the edges of the bolt, but also tear off the head. Then the question arises: how to unscrew the broken bolt. If you have separated parts and the broken bolt protrudes from the body of the part, then you can use all of the above methods.

How to unscrew a bolt with a torn head if the body of the bolt does not protrude from the part? There are several options for solving this problem.

Drilling a hole accurately is quite difficult. And if you hurt threaded connection, then the situation can be corrected only by drilling a hole and cutting a thread of a larger diameter.

A cut stud is no different from a bolt with a torn head, and therefore the methods for unscrewing it are the same.

Thread damage

There are cases when the thread of the fastener is damaged. In this case, the hardware rotates freely, but it is not possible to remove it from the threaded connection. To solve this problem, you need to lift the bolt. This can be done using a screwdriver or other similar tool, which is inserted under the head and lifts it with force. When the bolt rests, it begins to rotate in the direction of unscrewing. This is done until the hardware is completely removed. If the hole in the threaded connection is through, then you can push with reverse side using any suitable tool.

If you have a similar problem with the nut, then proceed in the same way. Hardware with damaged threads must be replaced, so if there is access, the nut can be cut off with a grinder or knocked down with a chisel.

Asterisk and hexagon

IN Lately fasteners with asterisk, hexagon and more exotic shapes are increasingly being used. If the edges on such a fastener are damaged and you need to unscrew it, then you can proceed by analogy with ordinary bolts with the only difference that to unscrew you need to use a tool with the appropriate shape of the edges.

Removing the screw

Screws with torn edges cause a lot of trouble. Unscrewing such screws is not easy, but there are several ways to solve this problem. To make it easier to unscrew them, you need to do the same preparatory measures as for the bolts.

In the simplest case, when the screw protrudes above the surface, you can try to grab it with pliers, wire cutters or another similar tool and unscrew it in this way. But most often there is nothing to grab onto. Then you can try the following methods:

1. Sometimes it helps to use thin rubber, for example, from balloon. A piece of such rubber is placed on top of the screw and unscrewed, pressing the screwdriver through it. This increases friction and prevents the screwdriver from slipping.
2. A screw with a curly head can be converted into a flat-head screwdriver by sawing through the groove with a hacksaw.
3. In order to solve the problem of a screwdriver slipping, you can use cyanoacrylic-based glue; this glue dries quickly and holds metal surfaces together efficiently. The procedure is simple: the screw and screwdriver are degreased, glue is applied to the head of the screw and the screwdriver is pressed against it, maintaining alignment. To speed up the setting of the glue, you can sprinkle it with soda. Wait until the glue has completely hardened and try to unscrew the screw.

In order to avoid such problems in the future, renew all threaded connections with taps or taps before assembly. Replace any damaged fasteners. Be sure to lubricate the threads and fasteners in general. It is best to use graphite lubricant for these purposes.

Damage to fastening materials can be called one of the most common problems during repair work. Such situations occur both during the repair of vehicles and during the repair of any items in home life. Let's look at how to unscrew a bolt with a damaged head below.

The main criterion for proper handling of equipment is the careful dismantling of fastening materials. It is better to prevent a breakdown than to eliminate the consequences. When significant force was applied to unscrew the bolt, but the fastener remained stationary, it is not recommended to continue dismantling. Excessive force will result in damage to the hardware. If a bolt breaks, the repair will take much longer.

Preparatory activities include several points:

1. Remove rust and dirt layers. If the threads protrude above the part, the pitch should be cleaned with a wire brush.
2. Tap the bolt head with a hammer. You need to hit the fastener hard. The impacts are aimed at destroying the oxides that form over time. The maximum effect of impacts will be only at the stage when the bolt head is still pressed to the base. After removing the fastener from its place, there is no need to knock so as not to damage the thread. The main thing is to prevent the bolt from bending.
3. An effective way to unscrew a bolt is to heat the fixation area. The task is to heat fastener and let it cool. At this stage, the rust begins to break down and some substances burn out. After this it is much easier to unscrew the bolt. It is advisable to heat the fasteners very much. To do this you will need a blowtorch, acetylene torch or gas-burner. In each case, it is necessary to adhere to safety precautions, since we're talking about about open fire.
4. Lubricate the bolt with a light-flowing type of fluid. The most common product is the WD aerosol formulation. The advantage of this product is that it quickly gets into all the cracks and spreads along the thread. Brake fluid and kerosene are considered to be quite effective ingredients. To achieve the desired effect, after applying the product to the attachment site, it must be left alone for some time. One hour will be enough, however, sometimes you have to leave the parts for 12 hours.

Step-by-step instructions for unscrewing a bolt

The methods presented below will help solve the problem of unscrewing fasteners for various types of damage.

With damaged edges

The experience of specialists will tell you , how to unscrew bolts with torn edges. To do this, several effective methods are used at once. The speed of work is affected by the location of the fasteners, the presence necessary tools and availability of hardware. It is recommended to use each of the following methods in turn until the damaged hardware is completely dismantled:

• Using a sharp chisel. This method is only applicable when a large bolt has broken. Access to fasteners will be a significant argument. To remove a part with a broken edge, you will need a chisel and a hammer. You need to attach a chisel to the head of the bolt tangentially and hit it with a hammer. This approach can be called the simplest. But such actions are not suitable in all cases.
• A more effective method is to use an adjustable key. If there is free access to the hardware, a universal key will most likely be able to tear the element out of place. The principle of operation is to use special notches, which are located on work surface. The key securely clamps the head and allows you to unscrew the bolts smallest size. Required condition– the adjustable key must be new.
• A spanner wrench may also be a necessary accessory. Sockets for unscrewing bolts with torn edges quite often cope with the most difficult cases. The key profile should consist of 12 edges, and inside there should be an asterisk socket. The head should be one size smaller than the bolt. The part is carefully placed on the fastener using a hammer and the hardware begins to unscrew.
• Hacksaw for metal. The device allows you to cut a recess for further unscrewing of the hardware using a flat-head screwdriver. In this case, the depth should be 25% less than the height of the hardware head.
• Using a grinder or a file, you can make new edges for a smaller key size. Using an open-end wrench, you can make only 2 faces parallel to each other.
• The fallback option is to use welding machine. In this case, an additional nut must be welded to the bolt.

Thread damage

A common problem is thread damage. As a result, the bolt rotates in the seat and is not removed outward. There is a proven way to unscrew a bolt with broken threads. Use a flathead screwdriver to lift the fastener. To do this, a screwdriver is placed between the head of the hardware and the base, after which the fastening element is lifted up with force. Then you need to start unscrewing until it is completely removed from the seat.

Asterisk and hexagon

Fastening materials with asterisk heads, as well as hexagons, have become widespread. Such hardware is reliable and easy to use. However, such parts can also fail.

If the edges are damaged, you need to proceed in the same way as in the case of simple bolts. The only difference is that dismantling is carried out using special keys with characteristic shaped edges - hexagon or asterisk.

For a screwdriver

If access is limited, you can make a notch on the bolt. A chisel or grinder will come to the rescue. Having made a cut, they try to unscrew the hardware with a screwdriver. If this method does not bring the desired result, place the screwdriver at an angle and hit the handle with a hammer. Before unscrewing the torn bolts, it is recommended to apply a lubricant. The applied force must be in a counterclockwise direction.

Detailed video on how to unscrew damaged bolts:

Procedure for unscrewing a bolt with a broken head

Threaded connections become a real test when the head of the bolt breaks off as a result of applying force. If the parts can be separated, then dismantling the hardware will not be difficult. Much more time and effort will be required when the head breaks off and the fasteners still do not protrude from the base.

The procedure includes the following points:

• Use an appropriately sized extractor. These tools are made from a cylindrical rod. One side metal blank contains a tapered thread of the opposite type of cutting. The second side is equipped with a square shank. The use of the element is possible provided that the bolt is pre-drilled. In this case, the diameter should be 3 mm less than the thread. Then you need to select an extractor and hammer the device into the finished hole. Unscrewing a bolt with a torn head is done by carefully rotating the extractor shank.
• An excellent solution to the problem is to use a tap with a left-hand thread. The accuracy of the diameter must be observed, which must correspond to the thread value. The method consists of pre-drilling a new hole and cutting new thread. The approach will be difficult for those who do not know how to unscrew licked bolts. This will remove all parts of the broken bolt to the outside.

The process of drilling the bolt is critical. It is unacceptable to touch the threads of the seat.

How to unscrew a stuck bolt

Repair various elements car body and main components cannot be done without solving the problem of corrosion and oxidation of bolts. As a rule, craftsmen at factories carefully process all fasteners. High-quality lubricant is present on all threads seats. During further repairs, such compounds are not applied. Once water gets on the surface of the threads, the connections become sticky, and the soured bolts become too difficult to remove.

Masters use three effective methods solutions to this problem. Choose suitable option should be based on the capabilities of the car owner.

Unscrew a rusty bolt or nut by tapping

Tapping promotes the gradual destruction of scale and rust. To properly dismantle the fastening materials, you need to take a small hammer and strike, trying to turn the hardware. This method helps to quickly unscrew the connection.

The unscrewing force should be moderate so that you do not have to drill additional holes. If the process is performed correctly, it is necessary to thoroughly clean the bolts from rust and treat them with graphite lubricant.

Using solvents

High-quality anti-rust and anti-scale compounds are expensive and are the most effective means. However, you can find a lot on the market budget options domestic production.

The most popular is the aerosol composition WD 40. The substance quickly penetrates into micro-gaps and gradually dissolves corrosion. In addition, hardened bolts are unscrewed using brake fluid, kerosene and white spirit. To achieve maximum effect, you should wet any fabric with the substance and wrap it around the hardware for a while.

Thermal method

If the above methods do not give the desired result, there is only one way out - fire. Heating of the elements and instant cooling allows you to quickly free the threaded connection from scale. After heating with a gas burner or other device, the hardware must be cooled with machine oil.

In almost any situation, the bolts can be unscrewed using improvised means. All you need is a flathead or Phillips screwdriver, open-end wrenches, sockets, lubricant and a little effort.

Soured bolts and rusted nuts, tightly stuck to it, cause a lot of problems for car owners and service station employees, builders and workers in other areas where such connections are used. You can try a lot of ways, but still not unscrew the hardware. The last option seems to be an angle grinder, but it doesn’t always save you, as it creates other problems.

Car enthusiasts, who most often have to deal with stuck bolts, know how to unscrew a soured bolt. Several methods of unscrewing are used, including the use of physical and temperature effects, and chemical compounds.

Tapping and physical impact

Impact with a hammer and chisel helps to disrupt the adhesion of materials and corrosion, as a result of which the bolt gives way and is unscrewed.

• Tapping. A preparatory activity that helps destroy oxides. In mild cases, after tapping it is possible to unscrew the hardware. It is enough to hit the fastener 2-3 times with a hammer using a copper adapter.
• Loosening. Like tapping, it is aimed at destroying rust. You should not unscrew, but rather tighten the bolt even tighter, and only then try to unscrew it.
• Lever arm. It is recommended to use it as a key tool at hand. First you should clean the hardware itself and the area around it with a brush with metal bristles. Then a socket wrench is put on the head of the fastener, and a pipe is put on the wrench. The lever increases the force of impact, but it is not recommended to apply excessive force, as this leads to licking of the edges of the nut and breakage of the key.
• Chisel. With this effective methodology You can break up the rust, causing the fasteners to come loose. However, in this case, it is important how exactly the chisel is installed. It should be placed closer to the edge of the bolt/nut, at an angle, in the direction of unscrewing. The blunt side of the chisel should be struck sharply and powerfully with a hammer.

WD-40 and penetrating agents

WD-40 is a popular product used by almost all motorists. If suddenly it is not at hand, other liquids, such as gasoline, kerosene, white spirit and the like, will help unscrew the bolt due to its high penetrating ability and solvent properties. They soften dirt and rust and penetrate deep into the thread, acting as a lubricant. Application is simple: you need to clean the area around the soured compound and fill it with the chosen product. After 10-15 minutes, the deposits will soften, the lubricant will seep into the smallest gaps - the bolt can be unscrewed.

Warming up

Under influence high temperature metal expands, therefore, in order to unscrew a bolt, you need to heat the nut or part into which the hardware is screwed, and if this does not help, then the fastener itself, since fluctuations in size will help destroy the rust. Heating can be done using a tool such as a gas torch, soldering iron, or even a lighter.

A special device for heating corroded and stuck bolts and nuts is induction heater bolts The heated part is placed inside an induction field, a spiral, and as a result heats up. The advantage is that heating is carried out from all sides at once, and not from one side, as in the case of using a torch or other tool. This device is small, convenient, runs on a 220 V network. You can assemble it yourself from improvised means.

While the nut is hot, unscrew it with an open-end or socket wrench. If it was not possible to unscrew it immediately, repeat the procedure and use combined methods (lever, tapping, loosening).

Acids

Acids are used to loosen bolts and nuts. A well-known remedy is table vinegar. After moistening the cleaned joint with vinegar or covering the rusty area with a rag soaked in vinegar, you need to wait about 30 minutes for the rust to soften. Then the hardware can be unscrewed.

In addition to vinegar, phosphoric acid is used, and in particular Coca-Cola, which contains it in sufficient quantity for a positive result. The procedure remains the same: you need to clean the area surrounding the fastener and fill the fastener with a drink. He needs to get wet. Periodically they try to unscrew the bolt. Phosphoric acid is used to degrease and dissolve rust.

A special product made on the basis of acids is a rust converter. Before using it, the surface must be cleaned and degreased with a solvent. Then a small cloth is moistened with the converter and placed directly on the rusted connection. The rust is destroyed - the hardware is twisted out.

Shearing off a bolt

The alignment/camber adjusting bolts often become sour. The fact is that they need to be lubricated not only at each camber adjustment, but also at zero maintenance. If this is not done, the bolts will become sour. A layer of aluminum oxide can be found on the removed bolts. There may be a situation where the nut unscrews more or less freely, and the bolt rotates together with the silent block and lever, i.e. the bolt sours precisely in the inner bushing of the silent block. In this case you can:

• Heat - the success of this event is not guaranteed, and you will have to spend a lot of time.
• Fill with “weedishka” - if the bolt in the bushing is not too completely soured, this method will help to unscrew it. If necessary, you can leave the bolts overnight or for a day to dry. Then they should be warmed up. After this they usually unscrew.
• Use a construction hammer. First, unscrew the nut and remove the washer. Then screw the nut flush with the bolt. Place a head of appropriate size on the nut. Then, by inserting a lance into the hammer drill, and the lance itself into the head, turn on the hammer drill in impact mode. The bolts are knocked out due to vibration and can later be unscrewed.
• The last method is to saw the bolt in the silent block with a grinder, but there is a risk of damaging the subframe. If you remove the subframe, then such work is very labor-intensive and expensive.

The work is done step by step as follows:

1. Having installed the jack and placed some stands under the car for safety, remove the wheel and fist and get to work. You need to cut extremely carefully so as not to cut through the subframe.
2. Having sawed off the lever and the eye, pull it out from the inner bushing of the silent block. It is more difficult to cut off the inner bushing with the bolt than the lever, since they are recessed into the subframe and are difficult to reach with a grinder.
3. When the bolt has already been sawed, it may turn out that its parts cannot be removed due to a soured bushing. In this case, it is recommended to heat the fastener parts and use a chisel and hammer to help by tapping on the sleeve.

Naturally, with this repair option it is necessary to purchase new levers and bolts in advance. When doing the work yourself, you will only have to spend money on components. However, it is not recommended to take on this work without proper skills in working with an angle grinder. Before embarking on a radical method, experts still advise trying conservative and less expensive methods.

Soured bolts - headache motorists. You have to spend time unscrewing them, but if you know in what ways you can unscrew the bolt, the result of the work will be positive.

The widespread tightening of belts forced by force to remember or master methods self-repair car. We will learn how to deal with and unscrew stuck bolts and nuts at home from this article.

In order to unscrew a broken pin or unscrew a rusted nut or bolt, sometimes you have to work hard. Let's look at the main methods of dealing with intractable fasteners. It is useful to tap a stuck nut with a hammer, placing a heavy weight under the side opposite to the impact. metal support. Thus, it is often possible to move it left to right and move the stuck nut out of place.

A good result is obtained by soaking rusty threads using an easily penetrating lubricant. This can be unisma, wd40, kerosene and in some cases even vinegar. You just need to be patient and wait until the liquid penetrates into the joint. If possible, leave the capricious fasteners overnight.

To remove rust and dirt, it is a good idea to clean the fasteners with a wire brush.

If the edges of the bolt are torn off and rounded, you can try to move the fastener from its place by hitting a chisel with a hammer. We set the chisel tangentially and carefully hit it, thus unscrewing the bolt or nut. You can use a sharp chisel to cut the nut and this is also an option. However, for such purposes there are more convenient device. Using ring clamps with a sharpened wedge, easily accessible nuts are simply cut.

An effective way to loosen fasteners is to preheat them until red hot. The easiest way to do this is with a gas canister supplemented with a special nozzle. Such a miniature analogue can always come in handy on the farm. For example, it is not difficult for them to dry the flooded spark plugs of a car.

If your stud or bolt has broken off and is sticking out from the outside, at least a small piece can be tried to weld a nut of the appropriate size to it. Now you will have something to grab onto. In addition, during the welding process, additional heating will occur, which in turn will weaken the grip of the stuck joint. Well, if the fragment is inside, then it will have to be drilled out. In this case, it is important to accurately mark the center of the installation site for the first drill with a small diameter. Then you need to sequentially go through the fragment with enlarged drills until a thin wall remains. The rest of the fastener is usually easily turned out using the so-called extractor or a faceted tool driven inside, for example the same screwdriver. Of course, drilling is a troublesome task, but the result is important here. After all, you won’t replace the body of an expensive unit because of one broken pin.

Well, now we’ve learned how to unscrew rusty fasteners. Surely everyone has encountered this problem.

Articles 1445

Anyone who repairs their car themselves often faces the following problem: how to loosen a rusty bolt or nut. Metal oxide increases the size of the nut, making it almost impossible to unscrew it. And you need to unscrew it carefully so as not to damage the thread, part or mechanism.

Oxidized and rusted connections are a constant headache for car enthusiasts, especially if the car has a long enough lifespan.
What are the possible solutions?
You can find various tips on the forums:

What's the result?
Wasted nerves, effort, time and a high risk of damaging the threaded connection and part.
The civilized solution is penetrating lubricant.

Let's look at specific example, how to unscrew a rusty bolt at home on the rear suspension arm.

Before listening to advice on forums and using force, use penetrating lubricant Liquid wrench “PITON”.

This is special with aerosol solution for rusty bolts. A powerful jet penetrates into the most hard to reach places, dissolves rust and scale, displaces moisture. Liquid Key lubricant forms protective film which prevents rust from forming in the future.

How and with what to lubricate a rusty bolt in order to unscrew it?

1. Stir the contents of the container for about 2 minutes. From a distance of 20 cm we apply aerosol Liquid key to the area around the connection.

A special nozzle allows you to penetrate hard-to-reach places. We wait for 3 minutes for the product to penetrate deep into the connection.

2. Unscrew the nut. If the first attempt fails to unwind, apply PITON lubricant again.

3. Easily unscrew the connection without even exerting effort.

Lubrication PITON Liquid key didn't disappoint!

Penetrating lubricant with rust converter “PITON”— a civilized way to solve problems when repairing a car and in everyday life.

The choice is yours: listen to difficult advice or buy lubricant “Liquid Key” to deal with rusty components easily and without damage.

Each of us, at least those who have been involved in car repairs, have different metal structures bolted, etc.

How to unscrew a rusty bolt or nut

I was faced with the problem of rusted bolts. For motorists, this problem is more familiar, since there are a lot of threaded connections in the car that are operated under harsh environmental conditions, when the bolt and nut are constantly exposed to moisture.

Moisture reaching the surface bolts and nuts, under the influence of an oxygen environment, the iron oxidizes and the material of the nut at the thread begins to fuse with the material of the bolt. During the process of metal oxidation, the volume of oxides increases significantly compared to the volume of the original metal. As a result, the connection between the bolt and the nut becomes jammed.

The more time passes, the more the connection rusts and the stronger the bond between the bolt and nut. Taking into account various designs bolted connections, very often it becomes necessary to unscrew a rusted bolt and not cut it off, for example, with a grinder.

And we want to talk about how to unscrew a rusty bolt in this article. In our article, we tried to describe all the main methods of unscrewing corroded bolts.

Methods for unscrewing rusted bolts

So, having tried to unscrew the nut, you realized that it does not unscrew even with the application of too much force. Firstly, do not panic and try to unscrew the nut using force. This risks causing you to simply tear off the head of the bolt or nut. Alternatively, you can ruin wrench, especially if you are trying to unscrew a rusty threaded connection using a classic open-end wrench.

If you use an open-end wrench, replace it with a socket or socket head. The second type of wrench, in contrast to the open-end wrench, fits more tightly to the bolt head, and most importantly larger area comes into contact with the edges of the nut.

After the key is selected, it is necessary to clean the connection area from rust. For this you can use like mechanical tools(nail, awl) and liquids (kerosene, brake fluid, gasoline, special liquids for removing rust, tap water etc.).

Very good remedy is such a popular drink as Coca-Cola. This is what motorists in America use. Due to his chemical composition It peels off rust very well. Liquid is preferable, as it penetrates deep into the threaded connection and separates the rust mass into layers, which reduces the strength of the connection between the bolt and the nut. After you have applied the necessary liquid to the threaded connection, you need to wait 10-15 minutes.

Next, using a socket wrench, try to carefully apply a lot of force (you can try to lengthen the lever by cutting off a pipe). The main thing is not to overdo it and not to rip off the bolt head. You need to unscrew it as follows: apply force in small jerks with a gradual increase in force. As a rule, the bolt gradually gives in.

If the corrosion is very severe, the above remedies may not lead to positive result. In this case, you can use a hammer and chisel. The chisel is placed on the edge of the bolt head at an angle in the direction of the thread and with sharp, gentle blows we try to knock the bolt down so that it rotates. Similarly, you can try knocking on a wrench placed on a head or nut, the main thing is to calculate the force of the impact so as not to break the bolt or key or “lick” the head.

One more in a good way unscrewing a rusty bolt is a heating method. As you know from physics lessons at school, metal expands under the influence of heat. If you heat the bolt very well, the threaded connection will loosen a little and you need to unscrew it before it cools down.

Heat bolted connection can be done using a gas burner or blowtorch. However, during the heating process, be careful not to start a fire.

After heating, you need to hit the heated elements several times with a hammer and try to unscrew the connection.

Unscrewing a rusty bolt or nut can be quite nerve-wracking.

A person who has never faced the problem of how to unscrew a rusty, soured bolt or a tightly stuck nut cannot even convey how much time, effort and nerves this sometimes seemingly futile task can take. Sometimes you just give up, and the only way out seems to be the “grinder”, which allows you to resolve the issue, albeit radically, but quickly. But often even she is not able to help and threatens only to aggravate the situation, creating problems of a different kind.

Is it possible? unscrew the problematic bolt or rusty nut without resorting to emergency measures? Car enthusiasts know this issue best. They are the ones who most often encounter similar situations and can give practical advice by sharing successful experiences and recipes from their own arsenal of remedies. Let's consider the available options.

Lever arm

This is the first thing you can do if you need to unscrew a rusty nut or capricious bolt.

As lever device used steel pipe, put on the key. You should first go over the fasteners and around them thoroughly with a brush with metal bristles. It is better to use a spanner wrench, but in extreme cases an open-end wrench will do. Everything needs to be done carefully. The main thing is not to overdo it. Excessive force is unacceptable, as the result may be a torn bolt head, licked nut ribs or a broken key.

Chisel

Here we are not talking about simply cutting off a rusty nut or the head of a tight bolt. With a chisel and one sharp blow of a hammer, you can tear stubborn fasteners out of the tenacious embrace of rust. To do this, you need to point the chisel closer to the edge of the bolt or nut at an angle in the direction opposite to the thread, and then strike sharply and firmly with a hammer. Using similar technology, experienced craftsmen With one blow they masterfully rip off any, sometimes the most hopeless nut or bolt. Of course, you still need to grow to such professionalism, but the method works.

Tapping

This does not require special skills and deep knowledge in theoretical mechanics the operation can be either a solution to the problem or preparatory stage to solve the problem of unscrewing a rusty bolt or nut. In any case, two or three sharp blows with a hammer on the fastener through a non-ferrous metal attachment will not do any harm. This action will help destroy oxide layers and make the task much easier.

Loosening

Perhaps, during the process of unscrewing, a rusty bolt or an unruly nut has already moved along the thread by a couple of microns, but this moment, of course, cannot be noticed. Therefore, you need to try to tighten the fasteners even more and try to loosen them again. This technique allows you to destroy oxide formations and, gradually loosening, unscrew the threaded connection.

Warming up

You should try to achieve the desired result by heating the capricious fasteners. Everything will do here - a gas torch, a soldering iron, a pocket lighter. You can even use one soaked in gasoline or other flammable liquid rags, but this should be done carefully, following safety rules. Without waiting for the old nut or rusty bolt head to cool down, you need to try to unscrew them. The best choice for these purposes is not an open-end wrench, but a box or socket wrench. If you don’t succeed the first time, you can try combining techniques - tapping well, loosening, using a lever.

WD-40

“Spray it with Vedashka” - this is how any garage will respond to a complaint about a problematic bolt or capricious nut. And they will be absolutely right. The best remedy haven't figured it out yet. Its exact recipe remains a mystery, but it is known for certain that the liquid consists of 50% white spirit. To unscrew soured fasteners, you must first open access to the threads by treating the area around the bolt or nut wire brush, and then generously fill the fasteners with “magic” liquid, spraying it from a spray can. After 15-20 minutes you can try to unscrew it. This remedy is really effective and almost always helps.

Gasoline, kerosene, turpentine and others

Unfortunately, WD-40 is not always at hand, and buying a can because of one rusty nut or bolt is not a good idea. The best decision from a savings point of view. Therefore, it is worth trying some petroleum products - from white spirit to turpentine. All of them have high penetrating power and are solvents. This property will help in the event of a threaded connection becoming clogged with dirt of various natures. The procedure is standard - the area around the fastener is cleaned and filled with kerosene, diesel fuel, or gasoline. After 10-15 minutes, when the liquid penetrates deep into the thread, you can try to twist the bolt or nut.

Vinegar

A rusty bolt or nut that does not want to be unscrewed can be brought back to obedience by table vinegar. To do this, wet the area of ​​the threaded connection with vinegar and wait 15 to 30 minutes. If time is not limited, then you can simply cover the fasteners with a rag soaked in vinegar. In a couple of hours, vinegar will thoroughly undermine the rust and weaken the adhesion of the mating surfaces in the fasteners. After such a “compress”, the rusty bolt or nut will at first reluctantly, and then become easier and easier to unscrew.

Coca-Cola

This is not a joke for people far from technology, and not news for specialists. Coca-Cola contains orthophosphoric acid, which is effectively used in production for degreasing, soldering, and cleaning rust from metal surfaces. The procedure is still the same. The fasteners are cleaned and watered with fashionable “fizzy water”. In the meantime, while the problematic bolt or nut is soaking, there is time to think about what kind of crap some of us drink with pleasure, considering it almost an elixir of health.

Rust converter

Such products are made on the basis of acids that destroy iron oxide. To use them effectively, it is better to moisten a piece of rag in the converter, cover the bolt or nut being unscrewed with it and leave it for several hours. Before doing this, it is advisable to degrease the fasteners well with gasoline, kerosene or some other solvent. The converter “breaks” the rust well and the threaded connection unscrews.

Brake fluid

Fresh or already used - it doesn’t matter, the brake fluid helps a lot. It has a high penetrating and lubricating ability, and therefore, if necessary, you can safely use it to unscrew a rusty nut or a tight, unruly bolt.

It’s better, of course, to moisten a piece of rag with brake fluid, cover the soured fasteners and wait an hour or two. During this time, the liquid will seep into the thread and the connection will be easier to unscrew.

Alcohol solution of iodine

We are talking about the idea of ​​​​an ordinary pharmaceutical alcohol solution of iodine. In this tandem, alcohol, also known as ethylene, and iodine, as an element of the periodic table, equally distribute among themselves the functions of freeing fasteners that have become soured in rust. Alcohol has a high penetrating ability, and iodine interacts with iron oxides and other compounds formed upon contact with external environment. Thus, these two substances weaken the rust, making it easier to free the rusted bolt or nut. To avoid getting your hands dirty and for convenience, it is better to apply iodine to the connection using a syringe.