The bolt extractor is exactly what they remember only when necessary. Although any home master or car enthusiast, such equipment in the tool box is clearly not in the way. And these are not empty words, but reality dictated by the life of a repairman.
It very often happens that during work the unscrewed bolt breaks. As a result, one part of it lies on the floor or on the ground, and the other remains in its place. It is no longer possible to unscrew the remains with the keys, heads or pliers. And in this case, a need arises for such a tool as an extractor of broken bolts. You can, of course, perform this procedure in other ways, but the use of equipment specially created for these purposes will greatly simplify the task.
Extractors for removing bolts allow you to turn off broken fasteners with threads of various diameters, but the most common sets include from M1 to M16. In this case, the technology for removing the broken bolts depends on where the fracture occurred.
Scrap below ground
In this case, it is necessary to insert a guide sleeve of the corresponding diameter into the formed recess. Next, make the hole as appropriate as possible with a drill. If the diameter of the bolt is large, then a drill with a smaller diameter can be used first. Then, in the resulting hole, hammer a rod of a suitable size with a hammer, then install a sleeve on it and unscrew the broken part of the fasteners.
Scrap area flush with surfaceIn this case, you will need not only a bolt extractor, but also a punch. With its help, it is necessary to outline the center in the remaining part of the bolt. Then you need to drill a hole, insert the rod with the sleeve and unscrew the chip.
Scrap above the surface
In this situation, the broken bolt extractor is used in the same way as in the first case. That is, a guide sleeve is installed, then a hole is drilled, a rod with a sleeve is hammered and the broken part of the fasteners is twisted.
After the chip is removed, it must be removed from the rod. To do this, it is enough to knock it with a hammer. In general, the process of working with such equipment is not too laborious.
Another question is how to choose a bolt extractor. As mentioned earlier, people resort to the purchase of such equipment forcibly, i.e., upon the fact of scrapping. In this case, the main indicator that you should pay attention to is the size of the thread. The extractor must be suitable for removing the fasteners.
It is another matter if they are acquired as a means of insurance. In this case, it is best to choose a kit with a large number of supported thread diameters. You should also pay attention to the direction of the thread. And one of the key points of choice is the material from which the bolt extractor is made. More reliable and durable will be sets made of hardened or chrome vanadium steel.