ᐅ Why do the screws on my BILLY shelf keep coming loose?

Created on: 15 Feb 2024 08:17
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Pinno9
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Pinno9
15 Feb 2024 08:17
Hello everyone,

I have a Billy bookshelf from IKEA that I have been using for some time now. I’ve noticed that the screws keep coming loose, even though I tighten them quite firmly and the shelf is not heavily loaded.

Most of the screws are the typical dowels with screws commonly used by IKEA, and I’m wondering what causes this. Is it due to the wood quality, the workmanship, or am I assembling it incorrectly?

Does anyone have experience with why screwed connections in BILLY shelves tend to loosen repeatedly and how to prevent this effectively?

I look forward to your tips and advice.
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sanjon
15 Feb 2024 09:45
Hey,

make sure to tighten the screws all the way, but without applying too much force, otherwise you might damage the wood. Sometimes using a bit of wood glue on the dowels helps for a better hold.

There might be vibrations that loosen the screws.
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Trate47
15 Feb 2024 11:03
Hello Pinno9,

I know that problem! 😉 With these shelves, the MDF board sometimes isn’t completely secure, which makes the screws more likely to loosen. My simple rule of thumb: just tighten them again, and if needed, use small felt or rubber washers. They act as dampers and help reduce loosening caused by vibrations.

And don’t worry – the "Billy beast" just wants to be treated well. 🙂
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Joshbe
15 Feb 2024 14:22
Hello,

The problem often stems from the properties of the material used. MDF and particleboard from IKEA have lower strength for screw holding due to their structure. This causes screws to loosen more easily, especially after repeated tightening.

Additionally, the type of connection (metal dowels in wood) contributes to the loss of holding power. Using thread-locking adhesive (such as Loctite or similar) is recommended to ensure a permanent connection.

Alternatively, the existing screw holes can be filled with wood glue and fine wood shavings, then re-screwed to provide a secure hold.
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lyndon
16 Feb 2024 08:11
Joshbe schrieb:
Recommendation: use of threadlocker

This is a very important point that I would take into account. Besides material issues, mechanical stress from weight and slight movements is a common cause.

Another tip: regularly check the screws for wear. Damage to the threads can lead to loosening. In highly stressed areas, it is advisable to replace them with higher-quality screws with greater strength.
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LOGEMIN
16 Feb 2024 13:55
Hello Pinno9,

I would like to go into more detail on this topic, as similar questions keep coming up.

1. Material properties: MDF boards have a porous and grainy structure that does not hold screw threads securely over time. This leads to the screws turning and loosening.

2. Installation errors: Screws that are driven in too quickly or at an angle can damage the threads or the surrounding wood.

3. Vibrations or stress: Even slight movements or stress over time can cause screws to loosen.

Tips:
- Always use the correct torque.
- Use thread-locking adhesive for important connections.
- When retightening, pay attention to the correct screw angle.
- For stripped holes, applying wood glue with wood shavings can help; wood filler that can be sanded is also an option.

Summary: The combination of the MDF structure, installation method, and subsequent stress causes loosening. Proactive maintenance can reduce the problem.