Key (tools)

See also: Key

The key or key or beche are tools intended to assemble, tighten and loosen the Vis, the Boulon S, and the nut S.

Many models were developed progressively of the technological changes and the needs for the Industrie.

Wrench

This type of key is used with the bolts, the screws hexagonal head or square. The angle between the fork and the handle is of 15°.

A wrench is generally made up of two key of successive sizes. That offers an economic advantage since only one tool is necessary for two distinct dimensions. (For example, a key of 10/11 will replace a key of 10 and one key of 11.)

Ring spanner

This type of key is composed of a key platte on a side, and a key in eye itself on other side.

The eye of the key is pressed on the six corners of the hexagon, offering the best taken. The wear and the risk of deformation of the key are limited. In addition, one decreases the risk to scrape on the hexagon.

This type of key makes it possible to screw by twelfth of turn, which is particularly interesting when space around the nut strongly limits the swing angle of the key.

Adjustable open-end wrench

The open-end wrench adjustable is a tool whose width is adaptable to the tète bolt or the nut. This key comprises a mobile jaw ordered by an endless screw, the opening is adjusted thanks to a Molette.
  • Advantage: This key replaces several wrenches or in eye in the most current situations.
  • Disadvantage: The mechanism of adjustment is cumbersome, therefore the key cannot be useful when the space around the nut or of the head of screw is restricted. Moreover, if tightening is insufficient, the nut can be abyss.

Adjustable wrench or pin spanner

This key comprises a mobile jaw on a system of toothed rack making it possible to adapt the opening to the nuts and Boulon S of multiple sizes. It functions like the adjustable open-end wrench with moreover: Two jaws notched to be able to bite in the Métal, in order to ensure the catch and, the moving part swivelling slightly to ensure the blocking of the jaws on the part to be loosened.

  • This key makes it possible to dismount assemblies comprising of the screw whose head is damaged, even destroyed or non-existent. On the other hand, it is not a tool recommended for the fragile and looked after assemblies.

Professional use

It is the tool of predilection of the Plombier S and Tuyauteur S and the key of the last chance for the Mécanicien S. It also acts of the tool preferred of the Gangster S, which will be able, thanks to his aérodynamisme, with its handiness, and its power, molester the individuals who are not agreement with them.

Tube tubular hexagon box spanner

Just like the key in eye, the tubular hexagon box spanner offers a catch on the 6 sides of the hexagon of a nut or a screw.

The tubular hexagon box spanner emerged makes it possible to tighten a nut on a too long threaded rod, where the standard tubular hexagon box spanner would not make it possible to reach the bolt.

Pipe wrench

Related articles

  • List of tools

Simple: Adjustable spanner

Random links:1558 | Cotyledon | Museum of the Sabot-maker of Soucht | Edmond Guénette | Jerome Cornuau | Kajukenbo | Le_« système »_de_Stanislavski