ᐅ Which screwing techniques prevent loose connections in BILLY?

Hello everyone,

I have recently assembled several Billy shelves and noticed that screw connections tend to loosen quickly with frequent use or load. Therefore, I would like to ask: What fastening techniques are especially effective in preventing loose joints in Billy shelves?

I’m not only referring to the choice of screws but also the assembly process itself, such as tightening torque, pre-drilling, the use of wall plugs or additional reinforcements. I’m particularly interested in how to achieve strong, durable connections that don’t loosen again after a short period.

Are there specific tips that work particularly well for this type of furniture, maybe based on personal experience?

Thanks in advance!

I completely understand your frustration, as I’ve also been quite annoyed when I noticed my Billy shelves gradually becoming a bit loose over time.

What helped me was starting to screw by hand first, to avoid damaging the threads. Then, I slowly applied the full torque with a cordless drill or screwdriver, but without overtightening to prevent the chipboard from splitting.

Even though it might seem tedious at first, using a suitable wall plug and a pilot hole slightly smaller than the screw often provides better grip and prevents the joint from loosening.

I also had good results using thread-locking lacquer or a light adhesive on the threads. This prevents the screw from slipping during installation and fills the hole more effectively.

I’m definitely interested to hear what others have to say about this – I’m sure there are more helpful tips here :-)

Luciandi schrieb:
An intermediate step with an appropriate anchor and a pre-drilled hole slightly smaller than the screw often provides better holding strength

I have to disagree here—especially with Billy-style shelves made from particleboard or similar materials, these are often just gimmicks. Drill holes and anchors only make the assembly more complicated and, in my opinion, don’t increase stability in the long run. Instead, they tend to make disassembly harder and increase the risk of damage.

What matters much more is using specifically designed connectors and the right technique when tightening. Above all, you shouldn’t just screw in randomly. I would recommend special furniture connectors and thread-locking solutions rather than typical DIY screwing with anchors.

What I’m really curious about is: what kind of load are we actually talking about? For a Billy shelf at home, a simple screw with occasional retightening is usually enough, in my opinion.

Basically, with Billy, as with many other pieces of furniture made from particleboard, it is crucial to use the correct torque when tightening screws. Screws that are tightened too much can split the material, while connections that are too loose become unstable under load.

I recommend drilling a light, appropriately sized pilot hole before screwing, but not deeper than the length of the screw, to maximize the thread grip in the material. Additionally, a torque wrench or a screwdriver with a torque limiter can be very helpful—especially when assembling several shelves.

Using thread-locking compounds can be useful, but their effect is not always ideal for furniture that you might want to disassemble later.

In summary: careful preparation and controlled tightening of the screws is key.

Since I often assemble furniture, here is a brief guide specifically tailored for Billy furniture and similar particleboard furniture:

1. Preparation: Always drill an appropriate pilot hole. It should be about 70-80% of the screw diameter to prevent the material from splitting, while still allowing enough space for the thread.

2. Screw selection: Chipboard screws with a coarse thread are best suited. They provide better grip in particleboard than standard wood screws.

3. Inserting screws: Start screwing by hand. Then use a cordless drill carefully with low torque. Never apply maximum force as this quickly damages the material.

4. Additional reinforcement: For critical joints, small dots of wood glue can be applied next to the screws in the pilot holes. The glue penetrates the material and reduces play in the screw. Allow time for curing.

5. Regular inspection: Especially for frequently used shelving, occasionally tightening the screws and checking them is advisable.

Summary: Careful pilot drilling, the right screws, and gentle tightening are the most effective ways to prevent loosening.

ottilie schrieb:
Drilled holes and anchors only make the construction more complicated and, in my opinion, do not permanently increase stability

Before we take a definitive stance: The effect of anchors should not be completely dismissed, as they distribute the load over a larger area and prevent screws from loosening in particleboard.

However, I am skeptical about screw-locking adhesives because they can cause problems during later disassembly.

I also wonder if the material itself is the main issue with many Billy-type shelves, since particleboard has inherent limitations when it comes to holding threads.

Therefore, I suspect that both construction methods and material choice need to be considered, rather than relying on one fastening technique alone. What do you think?