How to unscrew the screw sprocket without a screwdriver

What to unscrew the sprocket bolt with?

If the “sprocket” is internal, you can make a straight bar for a flat screwdriver, you will need a hacksaw for metal, or an angle grinder with a cutting disk, or a sharp chisel, the same hammer, VD-40, screwdriver. In the most extreme case (nothing helps), the bolt can be drilled, here you need a drill and a drill bit for metal.

Another option is to use a toothbrush. Melt one end with a lighter and then immediately insert it into the recess in the screw head. After waiting a little longer for the melted plastic to solidify, turn the brush counterclockwise. Of course it won’t help if the screw is screwed too tight.

How do you unscrew a little screw??

Instead of a knife you can use a CD, if the screw is not too tight you can use your fingernail, a plastic bank card, a coin, or a metal ruler, a metal hacksaw blade and a screwdriver. т. д. If the screw is a Phillips screwdriver, you need a knife with a sharp end.

Depending on the size of the screw, take a sturdy flat screwdriver or a chisel and use a hammer to try to unscrew the part that is holding it in place. The second method is to heat the part with a gas torch, blowtorch, industrial hair dryer, blowtorch or a regular gas burner.

How to unscrew a sprocket bolt: preparation

Whatever the reason, before unscrewing it is necessary to make preliminary manipulations:

  • the bolt fasteners should be treated with kerosene, wd-40 type lubricant or brake fluid to reduce the friction coefficient;
  • Tap the stuck bolt with a hammer;
  • heat the bolt with a gas torch to make it more pliable and to turn dirt and rust into ashes.

How to unscrew the sprocket screw without a torx screwdriver?

If you don’t feel sorry for the screw, drive a flathead screwdriver in it

Weld an L-shaped rod and unscrew it. Go to the nearest car service and ask for a torx to rent.

I get it with a flathead screwdriver (just make sure the stinger is made of normal steel). sharpen it (if needed). If the screw is screwed into the plastic. it is desirable to heat a little with a soldering iron.

nowadays it is not a problem to buy a universal kit, or use a flat tool to fit and tinker, if it is screwed or glued tightly, heat it up with a soldering iron

If there is liquid WD-40 drop it and after half an hour it will be easier to unscrew with a simple screwdriver, which will enter the slot in the flat.

How to undo a sprocket screw without a torx screwdriver?

If you don’t feel bad about the screw, put a flathead screwdriver in it

Weld a rod with an L and unscrew it. Go to the nearest car service center and ask for a torx.

I get it with a flat one (just make sure the stinger is made of normal steel). Sharpen (if necessary). If the screw is screwed into the plastic. it is desirable to heat a little with a soldering iron.

Nowadays it is not a problem to buy a universal kit, or fit a flat and torture, if strongly screwed or glued screw, you can use a blowtorch to heat it up

If there is liquid WD-40, drop it and after half an hour, it will be easier to unscrew with a simple screwdriver, which will enter the slot in the head.

How to unscrew a sprocket screw

In order to unscrew the bolt, you can use the following methods:

  • With an angle grinder or hacksaw for metal is made across the flats of the screw clear and accurate vertical kerf, unscrew it after that you can flat screwdriver;
  • with a torx star: hammer it into the head of the hardware, where there is a recess for a hex key, the star should be such a size that the slits in her holes did not pass, then the hardware is unscrewed by a sharp jerk;
  • using a drill with extractors and drills drill holes in the center of the hexagon, then hammer the extractor into it, then use pliers to pull it out together with the hexagon screw;
  • a thin hole is drilled with a reverse rotation drill, then a left-handed drill bit is inserted and the fastener is unscrewed.

Screw with ripped edges

Flat head / half head screws (or rather slotted screws) often come off, and there can be several reasons for this:

  • the use of old, poor quality or unsuitable tools;
  • improper screwing in (with a hammer, for example);
  • insufficient torque when unscrewing/screwing and, as a result, the screwdriver will pop out of the slot;
  • The screw is “seized” (corroded);
  • Using the screwdriver incorrectly (no drilling when needed or for the wrong material).

Method No1. Unscrewing

Carefully examine the screwdriver used to remove the screw and change it if necessary. It is important that the stinger is inserted firmly in the groove and is not damaged. If replacing the screwdriver does not help, there are other ways to proceed. If you want to e.g. drive a screw out of wood, tap the head and then tap the tool with each pull. You may also use the pliers, if possible, as we have already mentioned above. Or you can use a rubber band to seal it.

How to remove a screw with a torn edge

As a side note! Use a few drops of lubricant or brake fluid, kerosene to make the screw begin to twist. Another screw can be heated so that it expands. so the surrounding material will be deformed, and the product can be unscrewed.

If nothing helps, you can take radical measures.

Way No3. Extractors

Another good way to unscrew a screw. Select the drill bit so that its diameter is smaller than that of the threaded part of the hardware, make a hole in the head, cut the left-hand thread there and unscrew the screw with conical extractors. This is suitable for all types of heads, but in the case of self-tapping screws have to choose another way. they are hardened.

Steps of pulling out a broken screw with an extractor

What conclusions can be drawn? If you need to unscrew screw with stripped edges, the easiest way is to weld (or glue, if the force is not too much) a nut or some stop to the remaining part of the hardware, heat it and make a cut.

manufacturers are fools who look for extra work

it can be unscrewed with a normal screwdriver, then replaced with a normal bolt

I’d like to see you use an ordinary head to unscrew a torx that’s too stuck or too tight. On the contrary, it’s quite possible: you can hammer a Torx on an ordinary bolt with flattened edges and unscrew it.

If anything, I’ve eaten a ton of oysters.

How do you unscrew a sprocket bolt with a torn edge??

As an alternative. If the flat head is not countersunk, you can saw a slit for a flat screwdriver with a hacksaw blade and try to unscrew it that way. Before you do that, it is worth warming up the bolt with a technical hair dryer or a soldering iron of sufficient power, it should make the work easier. If the flat bar is big enough, you can also try to twist the bolt with the pliers, gripping it more firmly.

If the cap is flat or completely countersunk, it will be much harder.

For this purpose I took a suitable flat bit from a screwdriver, so that it fits very tightly into the hexagon, carefully hammered it in and then tried to turn it with a pair of pliers.

Or better to use special extractors for unscrewing screws, they are sold as all kinds of kits or even individually.

A bolt is a fastener with an external thread.

May consist of two elements, the rod itself with a thread and the head and the nut, and can screw into a hole with an internal thread, that is, the nut is not on the end.

The so-called “sprocket” can be external,

If it is the outside (external), you will need a hammer, to tweak a nut with it, but without fanaticism.

VD-40 penetrating fluid, it will make it easier to unscrew the bolt.

If the nut is not the end of the bolt, then the same pliers hold the head, and the nut is unscrewed with open-end wrenches of the required size.

If the “star” is internal, you can make a straight cut for a flat screwdriver, you will need a hacksaw for metal or a grinder with a cutting disk, or a sharp chisel, the same hammer, VD-40, screwdriver.

In the most extreme case (nothing helps), the screw can be drilled, you need a drill and a metal drill bit.

Another option, unscrewing a bolt with an internal sprocket, which is actually what I used.

Armed with a dremel, put a small abrasive disk on it. On the round head of the bolt with the internal sprocket, made two faces, ten millimeters for the open-end wrench. Just sawed off two halves on opposite sides. Unscrewed with a regular wrench. This can also be done with a regular screwdriver and even an iron file. In the illustration below, the red areas show some of the metal being removed from the head of the bolt.

There is another way to unscrew bolts with socket or sprocket, but with stripped faces. This is a paste that makes the mating parts stick together. Pretty easy to use, does not take long to cure, adhesion is very good. the tool (Phillips screwdriver, allen key or asterisk bit “stick” into the slot perfectly). If used according to the instructions, no paste will remain on the tool.

Expert answers

I want to note right away that the bolt, which is located in an awkward place, is difficult or even impossible to remove. Assuming the sprocket is freely accessible, then there are several ways to remove it.

Using a gas (pipe) wrench. You just need to clamp the bolt with a wrench and unscrew it. The clamping force of this tool makes it possible to unscrew even completely smooth products.

With a hammer and chisel. This method can be safely called a folk method. First, a small cavity is made so that it is convenient to insert a chisel into it, then several hammer blows are made in the unscrewing direction, and that’s it.

Restore the facets. To do this, use a file or grinder, which are used to apply a new relief pattern. You can also drill a hole in the product and hammer it into a metal bar with facets. You can also weld a new nut to the damaged head. If we are talking about small fasteners, the nut can simply be glued.

Cut the threads for the flat-blade screwdriver with a bolt cutter:

Often there is such a problem when a star bolt turns out to be torn off, and with what to unscrew it, a person does not have the slightest idea. And there can also be a situation when it is impossible to unscrew a bolt with a wrench.

How to unscrew a bolt under a sprocket: preparation

Whatever the reason, it is necessary to make preliminary manipulation before unscrewing:

  • Bolt fasteners should be treated with kerosene, wd-40 type grease or brake fluid to reduce the friction coefficient;
  • To hammer the riveted bolt;
  • heat up the screw with a gas torch to make the metal more pliable and to reduce any dirt or rust to ash.

Removing the screw

Screws with ripped-off faces are also troublesome. It is not easy to unscrew such screws, but there are several ways to solve this problem. In order to make it easier to unscrew them, you must do the same preparatory actions as for the bolts.

In the simplest case, when the screw is protruding over the surface, you can try to get hold of it with pliers, wire cutters or other similar tools and unscrew it that way. But more often than not, there is nothing to hold on to. Then you can try the following methods:

  • Sometimes it helps to use thin rubber, for example, from a balloon. A piece of such rubber is put on top of the screw and unscrewed by pressing a screwdriver through it. This can increase friction and prevent screwdriver slippage.
  • A screw with a shaped head can be turned into a flathead screwdriver by sawing a groove with a hacksaw.
  • To solve the problem of screwdriver slippage, you can use cyanoacrylate glue, such glue dries quickly and effectively binds metal surfaces. The procedure is simple: degrease the screw and screwdriver, apply glue to the screw head and press the screwdriver against it, keeping it aligned. To speed up the setting of the glue, you can sprinkle it with baking soda. Wait until the glue is fully cured and then try to remove the screw.

Connecting rod installation

Once the part has been removed and all foreseen activities have been completed, return the element to its original position. It is advisable to clean all surfaces and connections before carrying out work and then treat them with a thick lubricant. This will keep the connecting rod straight and make the job a lot easier if you have to dismantle it again.

During installation the part should be deeply seated on the shaft. This will prevent backlash from occurring during movement. The socket will gradually fail if the connecting rod is not properly seated. A torque of 50-70 Nm should be sufficient to securely fasten the parts.

Broken Edge Screw

It is not uncommon for pan head/semi pan head screws, or rather splines, to come loose for a number of reasons:

  • The use of old, low-quality or unsuitable tools;
  • improper screwing (with a hammer, for example);
  • insufficient torque when unscrewing/screwing and as a result the screwdriver will pop out of the slot;
  • The screw has “seized up” (corroded);
  • Improper use of the hardware (no drilling when needed or for the wrong material).

Carefully inspect the screwdriver used to remove the screw, and change to a better one if necessary. it is important that the tip is firmly in the groove and not damaged. If replacing the screwdriver does not help, you can use other methods. If you want to e.g. drive a screw out of wood, tap the head of the screw and then tap the tool with each pull. You can also use pliers if possible, as we mentioned above. Or you can use a rubber band to seal it.

How to remove a screw with a missing edge

If nothing helps, you can take radical measures.

How to unscrew a sprocket bolt: preparation

Whatever the reason, prior manipulation must be done before unscrewing:

  • The bolt fasteners should be treated with kerosene, wd-40 type grease or brake fluid to reduce the friction coefficient;
  • tap a stuck bolt with a hammer;
  • heat the bolt with a gas torch to make it more pliable and to reduce the dirt and rust to ash.

What are the difficulties?

If the bike has not been serviced before and you have to dismount the transmission for the first time, there can be some difficulties:

  • The mechanism is screwed too tight, you can not disassemble it and remove it even with great effort. This point will be corrected. You can stock up in advance with a special spray gun WD-40. It is designed to make it easier to make repairs to your bicycle and auto. It is necessary to treat the necessary mechanism with spray and wait for the specified time, after which it will be much easier to unscrew and remove the parts;
  • If you disassemble the cassette inattentively. parts and fasteners got mixed up. To avoid this, it is advisable to change the parts carefully, remembering the sequence of the next steps, possibly with a note, or use the instructions enclosed to the new part of the bike.

Removing the screw

Screws with ripped edges are a lot of trouble. Such screws are not easy to remove, but there are several ways to do it. To make it easier to unscrew them, you need to do the same preparatory steps as for the bolts.

In the simplest case, when a screw is protruding above the surface, you can try to grasp it with pliers, wire cutters or other similar tools and unscrew it that way. But more often than not, there is nothing to hold on to. Then you can try the following methods:

  • Sometimes it helps to use thin rubber parts, like, for instance, balloon rubber. A piece of such rubber is placed on top of the screw and unscrewed by pressing the screwdriver through it. This promotes friction and prevents the screwdriver from slipping.
  • A screw with a shaped head can be converted to a flathead screwdriver by sawing through the slot with a hacksaw.
  • To fix a screwdriver slip problem, cyanoacrylate glue can be used, it dries fast and holds metal surfaces well. The procedure is simple: degrease the screw and screwdriver, apply glue to the screw head and press the screwdriver against it, keeping the screwdriver in alignment. Sprinkle baking soda on the screw to make it work quicker. Wait until the glue is fully cured and then try unscrewing the screw.

In order to avoid similar problems in the future, update all threaded connections with lancers or taps before assembly. Replace all damaged fasteners. Be sure to lubricate the threads and fasteners in general. The best way to do this is to use graphite grease.