How to choose your wrench?

If the screwdriver is the essential tool for screwing and unscrewing, the tightening wrenches are used to tighten or loosen the nuts, bolts and screws. Widely used in mechanics, tightening wrenches allow you to adjust or disassemble different parts. Here's how to choose the right ratchet wrench set for your small DIY jobs.

What are the different models of fixed keys?

A fixed tightening wrench corresponds to a size of screw or nut. You should choose several key sizes, depending on the hardware you are using. Because unlike adjustable keys, it is impossible to adjust the size of a fixed key. These fixed keys are defined by the size of the screws and nuts for which they are designed.

What are the different types of adjustable keys?

Unlike fixed keys, you can vary the opening diameter of adjustable keys. This allows for a single wrench that fits multiple sizes of bolts or nuts. The adjustable keys are used for work on old formats of screws, large diameters, or for fasteners (plumbing, mechanical).

These keys are characterized by their maximum opening and allow work to be carried out in places that are difficult to access.

What are the specific tightening wrenches?

Even if the keys discussed above are versatile, your screwing and tightening work may require a more suitable key. These keys are designed:

either for certain categories of screws (non-hexagonal head and special impression);

or to reach the hard-to-reach screws and nuts.

According to what criteria should you choose your tightening keys?

Work to be done

• The basic keys to have in your toolbox are: flat keys, adjustable wrench, Torx key.

• Also read the article << All about the essential tools in your toolbox >>

• Some keys are more suitable for clamping force: key eye, combination wrench, wrench uncorked pipe .

• Other keys are suitable for screwing in places that are difficult to access: pipe wrench, socket wrench.

• Some keys are ideal for mechanical work: spark plug wrench, torque wrench, lug wrench, Allen wrench (bike settings, skates, rollerblades, scooters, skate-boards, etc.).

• Others are useful for plumbing work: rack wrench, claw wrench, sink wrench

• Performance

The clamping force required by the standards (NF, DIN, ISO) guarantees the quality of the tools and their compliance with precise specifications. These tools underwent torsional strength tests before being marketed.