Choosing Fixing Anchors and Screws for the Wall

Choosing Fischer anchors – and the corresponding screw – for the wall is a key step for any operation that involves fastening a shelf, cabinet, or light fixture. These plastic or metal elements are fundamental for wall grip.

The operation of an anchor is simple but ingenious: you make a hole in the wall with a drill, insert the suitable anchor, and then add a screw. The Fischer – name of the brand famous for the production of these tools – expands and creates the correct anchoring.

Preventing the screw from slipping under the weight of the object to be supported. There are also anchors for heavy loads, suspended furniture, or for crumbly walls, the important thing is always to choose the right model. How do you understand which anchors to use and which size to prefer?

What Are Fischer Anchors and How Do They Work?

Before understanding how to choose the right models, it's useful to deepen your understanding of the tool. We can say that anchors are structural elements used in holes in masonry to be able to screw in pins and screws without risking that the anchoring material crumbles. Causing the metal element to fall along with what has been hung, like shelves and racks.

The essential principle of anchors – which are used for concrete, bricks, drywall, or wood – is the ability to distribute the load and block the exit of the screw through a system of brakes and anchors. The moment the screw enters the Fischer, its structure expands and wedges into the hole. This definition helps us understand better how to choose fastening anchors and screws for the wall.

How Many Types of Anchors Can I Use?

The choice of anchors to insert in the wall depends on the measurements but also on the work. The plastic models, like nylon or PVC, are the most common and work as already described: they expand in the hole when the screw is screwed in, with good fastening on common masonry and medium loads. On the market you can find a large number of solutions, and you can also choose professional options.

For reinforced concrete and heavy weights, metal expansion anchors are used. In extreme cases, we use bolt anchors that are mainly used for heavy weights in solid supports. Then there are butterfly anchors, self-drilling or screw models that are used in drywall. And chemical anchoring models that allow you to manage anchors even in crumbly materials.

The Choice of the Ideal Fischer for Your Work

The first point has already been addressed: the anchor must be chosen based on the material in which it must be anchored: standard plastic solutions for masonry, expansion solutions for hollow materials, metal for those solid in reinforced concrete. Then you have to consider the weight that needs to be supported: diameter/length increase as greater weight capacity is required.

In this balance, the material in which the anchor is anchored comes into play. For example, a diameter of 5 millimeters supports 10 kg on light masonry and hollow bricks but up to 15 on concrete. The one with 6 millimeters diameter, on the other hand, reaches up to 25 kg.

How to Put Anchors in the Wall

First of all, you must put on the PPE for drilling in building materials, get yourself a drill with percussion movement, and drill bits for drilling concrete, stone, or walls in general. Don't know which to choose? Just take a look at the Krino catalog to find all the bits useful for drilling building materials on the market. Now we come to the point: how are Fischer anchors inserted?

Make a mark where you want to make the wall hole and choose a drilling with a diameter equal to that of the anchor: if you have an 8 mm Fischer, the drill bit should be the same. A bit wider for chemical anchoring models because space is needed for the product, a bit narrower for drywall since the self-drilling ones do the rest of the work and attach with greater tenacity.

In any case, you must always follow the instructions you find in the package of professional anchors. Then proceed with drilling and inserting the anchor: remember that the depth must be greater than the support to avoid blocks and deformations.