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Published : 08/29/2016 09:55:52
Categories : Mister Worker , Professional working tools guide

Sockets are ubiquitous keys in any tightening or unscrewing operation. They are cylindrical in shape, made of steel and in various dimensions: at one end they have a hexagonal or polygonal profile that will welcome the bolt to be rotated, while at the other a quadrangular female switchboard for the coupling of ratchets , dynamometric wrenches, or simple levers.


There are some differences in the choice between hexagonal or polygonal profile. The polygonal one, made up of two hexagons 60 ° out of phase, allows a 30° angle instead of 60° angle: it is ideal for maneuvring in confined spaces, but less suitable for tightening that require a lot of strength, as profiles of this type are less resistant. In these cases I therefore recommend the keys with hexagonal profiles.

The socket wrench is a very versatile tool. In fact, it can also be hooked to TORX keys, screwdrivers or slotted screws, which becomes very useful whenever a normal screwdriver is not sufficient for this purpose.


A very important component of this type of keys is the ratchet, as there are all types and qualities. The reversible ratchet has the particularity of being equipped with a mechanism that allows the compass to be imparted, alternately, in one direction or the other, the force to be transmitted for the screwing and unscrewing operations, while it assumes the neutral position to be repositioned at the starting point, ready to receive pressure again to be transmitted to nuts and bolts.

Socket wrenches are sold both individually and in assortment, usually composed of hexagonal sockets with hexagonal sockets of various sizes, which also include inserts for almost any type of screw, in addition to the reversible ratchet. They are excellent and complete; if you do not have a mechanical workshop but you are still considering the purchase, I recommend you to buy them in a complete series. In this way you will be ready for any kind of intervention on cars and motorcycles. In fact, these keys must be the exact size of the bolt, nut or screw that you intend to screw or unscrew, otherwise you risk ruining the edges of the hexagon, making it impossible to tighten with the right force and the subsequent release, if necessary.

Larger bushings allow you to tighten larger bolts, but also the clutch box will be larger, so the pawls to be used will have to be chosen accordingly. In case it is not really possible to obtain compasses and ratchets of the same size, it is possible to use augers or reducers, of sizes 1 "or 1.5", to be used respectively with smaller and larger ratchets of the dimensions of the compass being using.

I know very well that to maximize the ease of use of our tools it is not only the intrinsic quality that is important, but also where they are stored: this is why I accompany each assortment with a high quality tool box with some special features. Thanks, in fact, to particular holes you can see at a glance that the content is always complete. Moreover, in each housing of the bushes is shown the indication of the measure to facilitate the reordering of the tools.

There is more. Even the dimensions have been designed taking into particular consideration the functionality. For example, the 1/2 "cassette was made with the dimensions of a tool holder module, which can therefore also be stored in the 60mm high drawers; while the 38 "1/4" cassette is so small in size compared to previous versions that it can now be stored anywhere!

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