What can be dangerous to screw metal screws into wood

What can be dangerous to screw metal screws into wood What can be dangerous when screwing screws for metal into wood

Every self-respecting man should have skills not only in handling tools for household purposes, but also to know how to screw a shelf at home.

Each person has a certain set of tools - someone has a pair of running screwdrivers, which they use when necessary, but not always the required tools or fastening products are at hand. with

Based on the experiment of use, you can draw several conclusions and find out what happened.

Self-tapping screws for metal - what they are

Most often they are made of ferrous metal, and they are designed to fasten steel parts to a metal profile with a thickness of up to 0 1 cm. They also have a phosphate coating.

The screw has a countersunk head and a Phillips recess, and the fastening with a self-tapping screw with a small thread pitch is made with preliminary drilling of the hole.

No drilling required

If you do not have a screwdriver, an electric drill is usually used to screw the fastener to the surface. The fact is that it is not so easy to turn a self-tapping screw with a screwdriver only due to physical strength, and you will need to try hard. And if a lot of work is required to screw several dozen self-tapping screws, then the test will clearly not be easy.

If you screw a self-tapping screw for metal products into a wooden surface, you will not need to make much effort, and there will still be no need to pre-drill a place for attaching the self-tapping screw.

Small thread pitch

What can be dangerous to screw metal screws into wood In fact, self-tapping screws differ not only in their size, but also in the thread pitch. Because of this, they may have different purposes. Self-tapping screws for metal will have a smaller thread pitch than self-tapping screws for wood. This was done in view of the different density of materials into which the self-tapping screw will be screwed. The denser the material, the smaller the thread pitch should be.

It may seem that there is nothing special about this, but in fact, the hardness of the surface will greatly affect which screw should be used. Such design differences will directly affect the result, which can be very different from what is expected.

Poor fastening

As expected, due to the small thread pitch, metal screws will easily enter the wooden surface, but reliable fastening will not work. And although the shelf will be screwed to the frame of the structure (in our case, we are talking about a cabinet), it will still look unreliable. The shelf will wobble and upon closer examination it will be possible to see that the screws do not fit tightly to the surface of the cabinet.

And the whole point is that wood is a soft material, certainly softer than the same metal, and a self-tapping screw with a small step cannot be more stable along its entire length.It seems to begin to loosen the hole into which it will be screwed, and as a result the wood begins to "crumble", forms voids and after that the self-tapping screw simply cannot provide a strong grip. All this will negatively affect the reliability of the structure as a whole.

The result in practice is "unsatisfactory"

What can be dangerous to screw metal screws into wood When the work is finished, even if everything does not look the best way, you cannot do without the final testing. Will the shelf screwed in this way be able to fulfill its intended purpose?

Much will depend on the test conditions, as well as on the goals set before the start of work.

The goal is simple enough - to securely fix the shelf in the cabinet.

Naturally, much will also be determined by the weight of the items that will be located on the shelf, and as experience has shown, the shelf will be able to withstand 1-2 books. But a small stack of books (for example, the same 8 schoolchildren's textbooks) will already be an overwhelming burden. It begins to bend, and the screws for metal screwed into the wood begin to "crawl out" from the holes.

Still, it is not in vain that different types of fasteners are used in the field of construction and repair work.

If self-tapping screws for metal are intended for a metal structure, then they should be used for their intended purpose.

Experience with similar self-tapping screws on wood shows that reliable adhesion cannot be achieved. In this case, it does not even make sense to use self-tapping screws intended for metal surfaces on wood and structures made from it.

The most correct decision would be to buy suitable self-tapping screws for wood, and when the result you dreamed of is achieved, there will definitely be no disappointment from unsuccessful repairs.

Results and video on the topic

As you can see, it's not for nothing that there is even a classification of self-tapping screws according to the scope - for wood materials, for metal sheets, for drywall sheets , for window profiles and sandwich panels.

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