Owners of private houses often have to deal with bolts and nuts that somehow meet on the farm and require periodic braces. For this purpose, there should always be a pair of keys of different sizes, and if there is also a garage with a car on the site, you can not do without a set of tools .
The most common keys
Many varieties of this simple instrument have been created, among which the key of the end, carob and wedge is most often used. The latter should be in two copies: large and medium-sized. The rest, as a rule, can always be purchased with one set (from the smallest to the largest). The approximate range of the standard set of locks is from 8/10 mm to 19 / 21mm. Such dimensions are most often needed to perform household tasks. Socket wrench sets also range from 8-21 mm, but if the horns are all of the same type, the end keys have many options.
End type
The most common end key is a T-shape with a non-replaceable hex head for a nut of a certain size. The advantage of it is that there is no need to constantly change the head to the required size, but there is also the inconvenience that it is necessary to have many similar T-patterns for different nuts. As a rule, several T-shaped specimens are purchased for different nuts, which are most often encountered. To work with the remaining nuts, sets of interchangeable heads are used. The advantage of the latter is expressed in saving money, since if you buy a T-shaped socket wrench separately for each nut size, their final price will be much higher than the usual replacement set. So, for the set you will have to pay from one and a half to two thousand rubles.
In addition to T-shaped, the L-shaped face pieces are widely distributed, with a removable head on both sides. Sockets of different sizes, as well as on the carob type. The simplest version of such a plan is called tubular, since it is completely made of one piece of tube where the edges are expanded under the hexagonal shape of the nut. The key of the end hinge type is very convenient in operation, since they can unscrew the nut in hard-to-reach places. The attempt to improve the T-type resulted in the appearance of a key of the same shape, but with two additional heads on either side of the handle. Thus, he has just three heads of different sizes.
The simplest solution
Surprisingly, the simplest end key has a special purpose. Hexahedron L-shaped and designed to work with special nuts that have external threads. To unscrew such a nut, you need to insert the key into the internal hexagonal hole. They are widely used in plumbing, for example, when repairing faucets. Also, the hex socket head with a rounded tip is used to work with bolts that have hats with an internal hexagon socket. These bolts are good because their hats can be drowned in a fastened surface. The wrench is not suitable here. Thus, the end pieces are very useful for household use, and in some cases they are simply irreplaceable.