Purpose and principle of operation

Screw fastenings may be damaged. You cannot do without a special tool for removing broken bolts. It doesn’t matter whether the cap or the rod itself falls off. To unscrew them you need to grab onto something. For these manipulations, manufacturers have developed and filled the market with popular models of extractors.

The main area of ​​application of the device is in machine and furniture repair shops, as well as in construction and repair work on sites. He is an indispensable assistant for unscrewing damaged screws, self-tapping screws, dowels and nails. Using small extractors, you can disassemble folding knives or other screw-mounted structures.

There are many varieties of such devices. They differ in functionality, size, characteristics, design features, and are used to perform a specific task. The most suitable device is selected.

Operating principle:

1. A hole is drilled in the center of the broken bolt or stud.
2. A screwdriver wedge is driven inside.
3. After complete engagement, the process of removing fastener fragments begins.
4. Take a regular open-end wrench or a special tap holder. Holding the shank of the screwdriver, the damaged hardware is slowly unscrewed.

Idle cranking must be avoided. To do this, you need to expend strength and press the tool tightly against the fragment being removed. This will help achieve reliable grip. The extractor is firmly engaged in the body of the broken device. Further manipulations lead to the fastener unscrewing along its thread.

Tool structure

The basic principle of operation of the tool is to dislodge defective fasteners from the hole. To do this without losing the quality of the existing threads, you need to place the bolt extractor inside and turn it all the way so that the chip falls out. Therefore, firstly, in the set for unscrewing broken bolts there are different diameters to choose the most suitable one. And secondly, the device has edges or threads for displacing debris from the hole.

For ease of use, the tool for unscrewing broken bolts has edges on the opposite end for better grip with a special bushing or pliers. And the length is chosen in such a way as to remove residues with minimal damage to the thread.

Device and device types

The range of popular models is impressive. However, regardless of the manufacturer, there are two types of extractors for metalwork:

• internal;
• external (external).

Internal devices are divided into the following subtypes:

• one-sided;
• double sided

The internal devices have an oblong shape. Working end one or two. Single-sided screwdrivers are equipped with one wedge-shaped or cone-shaped working area with a right (left) thread and a short pitch. The second side is equipped with a shank in the form of a square or hexagon. On sale there are one-sided models, on the back of which a head with a hexagonal or square mouth is attached.

Both ends of double-sided extractors are working. On one side there is a short drill. They drill holes of the required diameter. The other end is equipped with a left-handed tapered thread. Bilateral devices are available in small sizes. They look like screwdriver bits.

The kits may contain guides for external devices that are used for precise alignment. This allows you to avoid damaging the body of the object during careless manipulations.

The external products resemble impact sockets for impact wrenches. However, there are sharp edges inside them, reminiscent of smooth curls. The socket impact heads are devoid of such elements. Some mechanics use impact wrench sockets to remove broken bolts. This leads to premature failure of the device.

All manufactured products are divided into three main categories:

Principle of operation. Instructions for use

It is better to purchase the device as a kit. There is a wide range of extractors on the market for removing broken bolts. How to use them is described in detail in the instructions to help the user. Along with the main part, there are:

• unscrewing bushings with a wrench head;

• drills of the required diameter;

• bushings for correct drilling of the part.

The kit contains everything needed for operation, including user instructions. The recommended modes of operation are indicated there. The process is described step by step. First, the broken area is cleared of dirt and foreign substances.

Then, using a guide sleeve, a hole is drilled with the drill specified for this extractor. The device is driven in with a hammer, after which the bolt is unscrewed with a wrench. If a screw product is used, then the kit includes a special bushing with which it is rotated.

Design features and specifications of individual devices

In addition to the main types of extractors, there are other types of designs. What are they? On store shelves you can find the following products:

1. Rod. An analogue of a cylindrical rod with longitudinal cutting edges. There are grooves between them. Drives into the center of the broken fastener. No pre-drilling required. The sharp edges fit tightly into the damaged hardware, which leads to reliable engagement. The other edge is equipped with a special nozzle with a tetrahedral shank, which is grasped with a wrench or wrench to deal with broken fasteners. According to buyers, the device is not very convenient, since it gets very stuck in the element being pulled out.
2. Extractor – drill. The working end of the screwdriver resembles a left-handed drill. Faces – with cutting edges. It cuts into damaged screw fasteners on its own. After a tight jam, it is possible to remove the broken object.
3. For a screwdriver. What to look for when choosing? The models are compact and are available in single-sided and double-sided versions. The body resembles a hexagonal rod. Can be used as a separate hand tool or as an attachment to a screwdriver. They are sold in sets that also contain guide bushings, knobs and drills.
4. Combined. The set of characteristics of the rod and wedge-shaped analogues. The shape is wedge-shaped. The grip is excellent due to the presence of a large number of sharp edges. The device is driven into the center of the hardware being removed using a hammer. Once engaged, it can be twisted both to the right and to the left.
5. Eccentric. The second name is a stud gun. Produced with an offset center. Area of ​​use: unscrewing studs. The device is interesting. Allows you to unscrew a screw type fastener with a head with worn edges or without a head. Belongs to the category of specialized devices. The only limitation when using the device is that it will cope with the task if there is a place to grab onto. If the bolt body is completely embedded in the object, the eccentric product will be powerless to do anything.
6. Secret extractor. The characteristics resemble an extractor in appearance - the best for extracting secret bolts from car wheels. A distinctive feature is the thickness of the walls. They are thinner so that they can be placed freely on the head of the wheel bolt without damaging the alloy wheels.
7. Reinforced. A distinctive feature is the material of manufacture. The composition contains special additives that increase the strength index. This allows you to extend the life of the device and make it more reliable.
8. For pipes. The main purpose is to remove pipe scraps, as well as various adapters in the sewer system. A conventional tool will not achieve the desired result. In appearance and operating principle it resembles a screw extractor, only the dimensions are significant. There is no need to drill a hole in the pipe. It is present initially and the device is screwed into it. After jamming, it is unscrewed together with the broken part of the pipe.
9. Universal. With the function of extracting pipes or individual parts thereof, if it is not possible to get hold of it with another tool. Copes with all pipes, regardless of their diameter. The main thing is that the maximum size of the device itself is sufficient. Works in a similar way to an internal thread extractor. Suitable for other uses.
10. Hydraulic. Belongs to the category of professional tools. The main purpose is to turn out rolled pipes. Belongs to the manual category. The dimensions are significant. Place of use: industrial production facilities.

How to choose the right product? It is necessary to decide on the scope of its use. This is the main selection criterion. Which product is better to buy depends on many factors, including the user’s personal preferences. You cannot make mistakes when choosing. Otherwise, a positive result will not be achieved.

The reliability and durability of the structure depends on the correct choice. It is worth noting that inexpensive devices made in the Middle Kingdom cannot be of high quality.

Where to buy devices? Experts advise visiting specialized retail outlets, getting acquainted with the presented assortment, holding the selected model in your hands, and determining the quality of the assembly and materials used. If necessary, you can get advice from a professional sales manager. You can order tools online in the online store. You need to treat such a purchase carefully, as there is a chance, instead of an expensive device from a leading foreign manufacturer, to become the happy owner of a disposable budget Chinese counterfeit with questionable performance characteristics.

Types of extractors

A bench extractor is a hand-held mechanical tool that comes in many varieties, all designed to remove broken bolts and other similar fasteners.

This plumbing tool is distinguished by the type of device, which can be single-sided or double-sided, as well as by its principle of operation, form and purpose.

Based on the method of use, there are two types of extractors: internal and external, or external.

External extractor (external)

As mentioned above, the external extractor, also known as the extractor head, is very similar in shape and appearance to a socket impact head for impact wrenches.

Inside this tool there is a special protruding sharp profile, thanks to which it catches on the broken rod of a threaded connection or on the head of a bolt with licked edges.

Such a screwdriver is pushed onto the removable fastener from above so that its edges cut into the base of the broken screw connection, after which it is unscrewed using a regular wrench or wrench.

Internal extractor

The name defines how the tool is used; in this case, it does its work inside the damaged screw fastener.

An internal driver is designed to drive or screw into the body of a broken bolt or into its head, so that engagement occurs, allowing it to be turned.

After engagement, the rotational energy is transferred to the broken bolt and, thus, it is unscrewed.

Thread extractor

This is the most common type of extractor, which refers to internal specimens; due to the shape of the main working area, it is also called a conical extractor.

At the main working end of such screwdrivers there is a left-hand thread with a fine pitch, thanks to which it is screwed into the damaged hardware until it jams.

First, a hole is drilled in the center of the damaged fastener, along its axis, to screw a conical extractor into it counterclockwise.

Next, the screw fastener is unscrewed.

To remove screw hardware with left-hand threads, extractors with right-hand notches are produced.

Hairpin extractor or thread extractor

This is the same tool as the previous option only with a different name, we mentioned it here

Internal extractors are available in single-sided and double-sided types.

Single-sided extractor

A tool that has only one working side, which can be made in the form of a wedge or in the form of a cone drill.

In this case, the wedge can have a double cutting edge, which increases the grip points and makes it easier to turn out the bolts.

The back side of such specimens has a tetrahedral or hexagonal shank.

Double-sided extractor

From the name it is clear that such a tool has two working ends, one of which, as a rule, has the shape of a conical spiral with a left-hand thread, and the other is a short drill for drilling a hole.

The main body of double-sided screwdrivers, as a rule, is small in size and made in the shape of a hexagon, in this they are very similar to bits for screwdrivers.

This instrument also varies in shape.

Wedge extractor

Most often this is a tetrahedral or flat extractor, which has a wedge-shaped working area.

It is driven into the center of the broken threaded connection into a hole pre-drilled in it, where the tool jams, as a result of which it becomes possible to unscrew the broken fastener.

The advantage of such twists is that you can unscrew a broken bolt in any direction, even to the right or to the left.

In addition, the production technology of this tool is much simpler and, as a result, it is noticeably cheaper than its counterparts.

The main disadvantage of wedge-shaped extractors is that they require sufficient space to drive in, requiring room to swing the hammer.

Rod extractor

This tool looks like a cylindrical rod along which there are longitudinal cutting edges and grooves between them.

This rod is driven into the center of the broken bolt or other screw connection, without pre-drilling, the sharp edges of the extractor cut into the hardware being removed, thereby causing engagement.

Then a special attachment with a tetrahedral shank is installed on the other edge of the tool, which is grasped with a wrench or wrench and the stuck fasteners are unscrewed.

The inconvenience of a rod extractor is that it gets very stuck in the bolt or stud being removed, and in order to pull it out you need to hit it with a hammer from different sides.

Combined extractor

This type of tool is a combination of the two previous ones: wedge-shaped and rod.

The shape of such an extractor is wedge-shaped, and for more reliable adhesion it has a larger number of sharp edges that engage the body of the hardware being extracted.

The engagement process occurs by driving the extractor into the center of the broken bolt or stud.

When the screwdriver is driven in to a sufficient depth so that engagement occurs, they can be unscrewed both to the left and to the right, depending on the thread of the fastener.

Extractor-drill

The working end of such a screwdriver is similar to a left-handed drill, its edges are made in the form of cutting edges, so that this tool is able to independently cut into the body of a damaged screw fastener, even without pre-drilling.

During the screwing process, jamming occurs, due to which the damaged fastener is turned out.

Screw spiral extractor

This type of tool is made in the form of a conical twist drill, which is screwed into the center of the bolt or stud being removed into the hole drilled for it.

Screw twisters come with a right-handed and left-handed spiral, respectively, for unscrewing fasteners with opposite threads.

Spirals can have more than one entry, which increases the jamming force in the extracted hardware.

The Screw Extractor, like the threaded one, is a multifunctional tool; with their help you can unscrew almost any screw hardware, both with and without a head, which is why they are more popular.

After removing the stuck hardware, unscrew the extractor in the opposite direction.

Eccentric extractor

An eccentric extractor is a stud driver with an offset center, which is originally designed for turning out studs.

This tool is designed in such a way that it can be used to unscrew a screw fastener with a head whose edges are erased or without a head at all.

That is why an eccentric pin driver is considered one of the varieties of specialized screwdrivers.

This type of extractor has one limitation - it can only help unscrew stuck hardware if there is something to grab onto.

In other words, for unscrewing broken bolts whose body remains in the base and does not protrude from it or protrudes but not significantly, an eccentric extractor will not help.

Extractor for screwdriver

This type of tool includes small-sized screwdrivers, which are a type of bits for screwdrivers; they can be double-sided or single-sided.

A distinctive feature of extractors for screwdrivers is that their main body is made in the form of a hexagonal rod.

Depending on the situation, they can be used as a separate hand tool or as attachments for a screwdriver.

As a rule, such screwdrivers are sold in sets, which also include special drivers, drills and guide bushings designed for centering the hole being drilled.

All extractors are designed to remove damaged screw connections, but some have their own specialization.

Secret extractor

This is the same external extractor that is used to remove security bolts from car wheels.

Only the name differs, and in some cases the wall thickness may be thinner so that the extractor head fits freely on the wheel bolt head without damaging the alloy wheels.

Reinforced extractor

This type of extractor differs only in the material from which this tool is made.

Thanks to various additives, the strength of such a screwdriver noticeably increases, which ensures greater reliability and service life.

Pipe extractor

This type of screwdriver is designed for turning out pieces of water pipes, gas pipelines, and various pipeline adapters in cases where it is impossible to turn them out with a conventional tool.

Such a tool is completely similar to screw extractors, and it works on the same principles, but is larger in size.

The only difference is that there is no need to drill a hole in the pipe, because... it is initially there, this is where the pipe extractor is screwed in, where the jamming occurs, after which the pipe is unscrewed.

One of the types of pipe extractors is an eccentric device, which, thanks to its mechanism, jams in the pipe and allows it to be unscrewed.

This tool is universal and fits pipes with a diameter of 1/2″ (12.7 mm) and 3/4″ (19 mm).

Universal extractor

This tool is designed to turn out the remains of a pipe or some part of the pipeline that cannot be caught in other ways.

It is called universal because it can be used for different pipe diameters within the dimensions of the tool itself.

This screwdriver works on the principle of an internal threaded extractor; if necessary, this device can be used in other cases.

Hydraulic Pipe Extractor

A specialized professional tool designed for turning out rolled pipes.

This is a large manual hydraulic unit that is used only in industrial production.

Main characteristics of devices

It is worth noting that extractors are designed to perform strictly defined tasks. They help remove a fastener with a broken head from an object. An indispensable item for car repairs. Much attention should be paid to such properties as the reliability and strength of the material used in manufacturing. The product is produced from high-carbon steel, carbide metals, and high-speed steel. S2 tool steel, oxidized steel, high-strength chrome vanadium steel and other similar alloys are often used.

It is worth noting that underground manufacturers use soft metals to manufacture products, which makes the use of these tools for their intended purpose impossible. Therefore, it is necessary to pay special attention to the manufacturer and labeling. You should not contact little-known companies or those whose products have complaints. This is fraught with loss of money.

The weight of the device depends on the metal used in its manufacture, as well as on the parameters and type. Internal extractors have lengths from 26 to 150 mm. Conical tip in the range of 1.5 - 26 mm. The weight of the structure is 8 – 150 grams. External products are available in lengths from 16 to 26 mm, weighing about 100 - 150 grams.

There are no GOST standards for these locksmith devices. Each manufacturer relies on its own specifications. Well-known brands have personal laboratories where specialists develop the best composition of materials for the manufacture of professional-level instruments. Product markings are either missing or the diameter for which the tool is suitable is indicated.

Rating of quality products up to 25,000 rubles

Heads – extractors 1/4″, ½", 6 – 27 mm, 13 pieces Sorokin 40.58, code 15476906

Products from a domestic manufacturer. Designed for pulling out bolts where the edges are completely worn out or damaged. The drive can be cranks, keys, ratchets. The set includes 13 elements. They arrive for sale in a convenient lockable case. The set is in high demand among professional locksmiths. Often purchased by auto repair shops to remove damaged screws.

The average price is 7999 rubles.

Heads – extractors 1/4″, ½", 6 – 27 mm, 13 pieces Sorokin 40.58

Advantages:

• efficiency;
• ease of use;
• high working resource;
• 1 year manufacturer's warranty;
• wear resistance;
• variety of metric thread diameters;
• quality of materials used;
• professional set.

Flaws:

• not identified.

Aist015372

Products of the Russian brand are manufactured in Taiwan. The set of external extractors consists of 12 items, including special heads and ejectors. Everything is packed in a practical case. The tools are suitable for working on damaged bolts and studs. Standard size – 10. CrV steel alloy is used in manufacturing. Package weight – 1.8 kg. The reviews are positive.

Retailers are asking 6,715 rubles for the product.

Aist 67310925 00-00015372

Advantages:

• practicality;
• functionality;
• versatility;
• reliability;
• durable alloy;
• suitable as a gift for a master;
• value for money.

Flaws:

• not installed.

Rennsteig RE-4719003

The set includes specialized tools that make it possible to quickly and smoothly remove damaged unnecessary fasteners from objects. The manufacturer packed the products in a convenient envelope with pockets. With proper use, damage does not occur, so expensive parts remain safe and sound. When working with fasteners made of soft material, the tool is screwed in by hand. If the composition is hard, you will have to use a drill. Dimensions – 1-5. Hardened chrome vanadium steel is used in the manufacture of the device. Metric thread - right - left.

You can purchase the products at a price of 4,540 rubles.

Rennsteig RE-4719003

Advantages:

• strength;
• practicality;
• versatility;
• ease of storage;
• burnished surface;
• no damage occurs during operation;
• polished cutting edges;
• long service life;
• hex head;
• two-year warranty from the manufacturer;
• designed for right-handed and left-handed threads;
• fastener removal speed.

Flaws:

• not found.

Gedore 6755550

Professional set from a German manufacturer. It is in high demand among masters of their craft. It goes on sale in a durable plastic case with separate holders for personal storage of devices. The main purpose is to remove broken screws and threaded rods. Length – 150 mm. The diameter of the drilled hole is M5 – M16. Manufacturing material – tool alloy steel. Weight – 790 grams. The manufacturer provides a 2-year warranty on its products.

The average cost is 23,740 rubles.

Gedore extractor set

Advantages:

• advanced functionality;
• ease of use;
• long service life;
• reliability;
• strength;
• convenient storage case.

Flaws:

• the price is high.

Matrix 13796567

The products are manufactured in the Middle Kingdom. There are no complaints about the product. The devices cope with cutting external threads on pipes with a diameter of 1*4, 1*2, 3*4, 1*1 1*4. The set includes a die holder with a ratchet, as well as a assembled handle. All items are in a plastic case with parameters 37*33*10 cm. The kit is in high demand among novice locksmiths.

Purchase price – 4857 rubles.

Matrix extractor set

Advantages:

• 8 items;
• functionality;
• ease of use;
• practical storage case;
• can be purchased through the online store.

Flaws:

• none.

JonnesWay 37589354

The set consists of five items. This includes conical multi-start threaded extractors with a small spiral angle. They are suitable for working with small diameter studs. Alloy chrome-molybdenum steel is used in the manufacture of devices. Supplied for sale in a durable plastic case. The tools are equipped with connecting squares with various parameters for transmitting torque. The driver is an adjustable tap holder or wrench, as well as a 12-sided socket head. The products are manufactured in Taiwan. Marriage items are not available for sale.

Purchase price – 2574 rubles.

JonnesWay extractor set

Advantages:

• advanced functionality;
• ease of use;
• quality of materials used;
• absence of marriage;
• value for money;
• positive reviews.

Flaws:

• not identified.

Rating of quality products up to 1000 rubles

Innopax 38294855

A set of tools for unscrewing bolts and studs with damaged heads. It consists of four elements of different parameters, in the manufacture of which hardened stainless steel is used. To remove damaged fasteners, you must first make a small hole in the center using a drill. Afterwards, the extractor itself comes into operation, which is firmly wedged and rotates counterclockwise using a key. Items are packaged in a beautiful black plastic case. The kit includes an instruction manual.

The average price is 964 rubles.

Innopax extractor set

Advantages:

• strength of the material used;
• practicality;
• wear resistance;
• durability;
• functionality;
• ease of storage and transportation.

Flaws:

• not installed.

A-Market 33853549

The set can hardly be called a new product. It is in high demand among locksmiths due to its reliability and value for money. Works with damaged right-hand thread bolts to help remove them safely from objects. Also copes with broken studs. Pre-drilling of the fragment is required. Product length – 51 mm. Number of elements – 5 pieces.

The average cost is 870 rubles.

A-Market extractor set

Advantages:

• versatility;
• practicality;
• functionality;
• long service life;
• quality of the material used;
• no defects on sale.

Flaws:

• not defined.

Hairpin driver 6 mm Jonnesway AG 010061-6, 15492076

The device is among the TOP best-selling products. Purchased for installation or dismantling of stud connections. It is convenient and easy to use, reliable and durable. Standard size – 6. Material of manufacture – CrV. Country of origin: Taiwan. The product is sold in convenient packaging. In addition to the tools, the set includes a warranty card and a dealer certificate

The average price is 790 rubles.

Hairpin driver 6 mm Jonnesway AG 010061-6

Advantages:

• increased working resource;
• suitable for regular use;
• lifetime warranty from the manufacturer;
• value for money;
• efficiency.

Flaws:

• none.

Hairpin driver JonnesWay 12 mm AG 010061-12, 15507184

The product is manufactured by a Taiwanese company. There are no complaints about the product. Marriage items are not available for sale. The reviews are only positive. The tools are designed for unscrewing and screwing in threaded rods. High-quality materials are used in the manufacture of the model. Weight – 180 grams. Can be purchased at specialized retail outlets or ordered online in an online store.

How much does the product cost? You will have to pay 820 rubles for it.

Hairpin driver JonnesWay 12 mm AG 010061-12

Advantages:

• durability;
• reliability;
• ease of use;
• lifetime warranty from the manufacturer;
• functionality;
• value for money.

Flaws:

• not found.

Forsage 37826220

A set of extractors in the amount of 6 items M3 – M25. The products are manufactured at Chinese production facilities. Allows you to quickly and easily remove damaged bolts. It is in high demand among novice locksmiths. Sold in all specialized retail outlets. Packaging parameters: 0.08*0.02*0.11 cm.

The average cost is 527 rubles.

Forsage extractor set

Advantages:

• long service life;
• reliability;
• functionality;
• practicality;
• versatility.

Flaws:

• not installed.

Thorvik 25148909

The products are manufactured in Taiwan. It is a set of multi-start threaded tools with a conical shape. Able to deal with broken pins of small diameter, carefully removing them from the object. Alloyed chrome-molybdenum steel is used in the manufacture of this product. The devices are equipped with connecting squares with different parameters for the purpose of transmitting torque. The driver can be an adjustable tap holder, an adjustable wrench, or a twelve-sided socket head of the appropriate size with a drive. Product weight – 160 grams.

Retailers offer the product at a price of 541 rubles.

Thorvik extractor set

Advantages:

• wear resistance;
• durable material;
• high working resource;
• practicality;
• versatility.

Flaws:

• not identified.

Forsage 37826212

The recruitment is made on the territory of the Celestial Empire. Consists of 6 elements. Supplied for sale in a convenient case made of durable plastic. Packaging parameters – 0.1*0.03*0.17 mm. Belongs to the category of new products. It is in high demand not only among novice locksmiths, but also among professional craftsmen. The designs are reliable and easy to work with. No special skills required. The manufacturing material is durable, which makes the tools durable even with active use.

Purchase price – 506 rubles.

Forsage extractor set

Advantages:

• successful set;
• functionality;
• versatility;
• value for money;
• wear resistance.

Flaws:

• none.

Features of operation

When you first get acquainted with this tool, the question may arise: how to use an extractor to unscrew bolts? In fact, there should not be any particular difficulties during operation, since this is a fairly simple mechanical device. However, in order not to make a mistake, it is worth describing a few simple rules for removing a part that has broken inside the thread.

To begin with, it is worth removing excess lubricant using a special composition or, conversely, using an oil mixture to better remove old or rusty joints. Next, depending on the level of the fragment relative to the main surface, you need to determine the method of eversion.

If the bolt outlet is lower, a guide sleeve is inserted into it, a hole is drilled, and the device is secured. After this, the broken fastener is turned out using pliers. The same sequence is used in the case of a break above the start of the thread.

However, if the bolt breaks flush with the surface, the drill guide sleeve may not be useful. Instead, you need a center punch, which is used to mark the center. Otherwise, the sequence of actions remains the same.

Rating of designs up to 500 rubles

Forcekraft 37826218

A set of thread extractors from a Chinese manufacturer includes 5 elements (M3 – M18). Allows you to quickly remove fasteners with broken heads. Manipulations do not require much effort and free time. In this case, the master’s actions do not lead to damage to the main item. It is supplied to stores in regular packaging, the parameters of which are 0.06 * 0.02 * 0.1 cm. For storage, it is advisable to purchase a special case.

Purchase price – 498 rubles.

Forcekraft extractor set

Advantages:

• significant work resource;
• reliability;
• strength of the materials used;
• wear resistance;
• practicality.

Flaws:

• none.

Partner 37826211

The kit from the Chinese manufacturer has 6 components (M3 – M25). Allows you to quickly and efficiently remove broken fasteners from an object. The tools are made from durable steel alloy, therefore they have high wear resistance and a long service life during active use. It is in high demand among both beginners and professional craftsmen due to the price-quality ratio. There are no problems with the purchase. The product can be found in specialized retail outlets or ordered online in an online store.

The average cost is 471 rubles.

extractor set Partner

Advantages:

• ease of use;
• product strength;
• durability;
• reliability.

Flaws:

• not identified.

Patron 37826213

A convenient and practical set is not produced in the Celestial Empire. There are no complaints about the product. User reviews are positive. Includes five items (M3 – M18). The devices make it easy and simple to remove broken bolts from objects. It is supplied for sale in standard packaging with parameters 0.1*0.02*0.17 cm.

The average price is 440 rubles.

Patron extractor set

Advantages:

• affordable price;
• practicality;
• quality of the material used;
• durability.

Flaws:

• not installed.

Forcekraft 40791699

Chinese-made products are in high demand among domestic consumers due to their reasonable cost and good characteristics. The set includes 5 elements for removing broken fasteners. Working with devices is easy and simple. Supplied to stores in durable plastic cases.

The purchase price is 314 rubles.

Forcekraft extractor set

Advantages:

• value for money;
• practicality;
• wear resistance;
• long service life.

Flaws:

• not identified.

Sparta 38114916

Products are produced in the Middle Kingdom. Steel and plastic are used in production. Suitable for removing broken studs and right-hand threaded bolts. The set contains 5 elements made of durable steel alloys. The product is in high demand among domestic consumers.

The average cost is 256 rubles.

Sparta extractor set

Advantages:

• versatility;
• reliability;
• durability;
• practicality.

Flaws:

• none.

The operating principle of the extractor for unscrewing broken bolts

If you have read the description of the types of this tool, then you can already imagine the whole simple procedure for removing bolts. But without systematization, this material will be incomplete, and let’s look at everything in more detail.

The first step is to mark the center of the broken bolt. For this we need a center punch and a hammer.

Then we drill a guide hole for the extractor. When drilling, be careful and do not move the axis of the hole to the side. Experienced craftsmen recommend drilling to a depth of three drill diameters.

Insert the extractor into the drilled hole and tap it with a hammer to securely fix it. After this, use the tap driver to begin screwing the extractor into the broken bolt. When it goes all the way, it will begin to unscrew the bolt. When working with the extractor, rotate only around its axis, and in no case shift the axis, otherwise you may break the tool.

Once you have unscrewed part of the bolt, you can use pliers or a clamp to continue unscrewing the broken element more quickly.