Almost every man, even if he does not live in a private house, but in an ordinary apartment, must have open-end wrenches and ring spanners. You never know what can happen in the household. This is especially true when you have your own transport or often have to deal with technology. When you know that you have a set of ring spanners, you don’t have to worry about how to make urgent repairs if necessary or to replace the most worn part. However, sometimes when buying such a tool there are difficulties with the choice. Therefore, we consider what it happens, and also what it is worth paying attention to.
Ring spanners: what is their advantage?
Have you ever had to unscrew an old rusted bolt? If you use an ordinary open-end wrench for this, which in its shape resembles the letter U, you can easily spoil the edges of the fasteners, and then you will have to suffer with pliers and a chisel. Such situations quite often happen if the size of the tool used is slightly larger than necessary. In such cases, especially when there is good access to the fasteners from all sides, it is much better to use ring spanners. Their working profile allows you to tightly embrace the part, fully repeating its shape, and not to worry about the integrity of the faces. This ability allows the master to exert great efforts, so it is easy to unscrew or tighten bolts or nuts with such a tool.
Crow keys: features and main types
As a rule, this type of tool is made double-sided. The handles of such keys are both straight and curved. They must be used in accordance with the parameters of the nut, otherwise there is a risk of erasing the teeth, which leads to damage to the tool. Flare keys are good for everyone, except for one drawback: the mandatory availability of free access to fasteners. This is their only weakness. If the horn tool can still be used somehow on the side, then with a ring such a number will not work. And yet, the latter is much more convenient to work with, so it is very popular with both home craftsmen and professionals. The profile of the crown keys can contain either six (TORX profile) or twelve faces.
The larger their number, the smaller the angle required to rotate and the more convenient it is to work in a confined space. But the hex keys are better in contact with the nut. Therefore, you can not be afraid of them for lubricating the corners of the fasteners. The ring can be with the handle both in the same plane, and at a small angle of inclination (15 °). Tools of the second type are more universal, and the first is almost never used. The most interesting options are with an S-shape, hinge or ratchet (ratchet). The first two allow you to reach the nuts in hard-to-reach places, thereby leveling the advantage of the spanners. And the key with a ratchet allows you to forget about the need to throw it after each turn. Another important advantage is the small angle of rotation required to tighten / loosen the nut. The number of teeth in the ratchet can reach up to 72. In this case, an angle of only 5 ° is needed to rotate.