ᐅ Reinserting screws in a KALLAX unit if the hole is stripped?

Hello everyone,

I recently assembled a KALLAX shelf from IKEA, and unfortunately, one of the screw holes has been stripped. Although the shelf isn’t heavily loaded, the screw now barely holds, and I want to avoid instability or having to replace the entire unit.

My question is: Is there a proven method to reinsert screws securely into the stripped holes of the KALLAX shelf so that it becomes stable again without needing major repairs?

An ideal solution would be one that can be done with simple tools, possibly including tips on special repair kits or alternative screw techniques. Do you have any experience with this or could you explain how you’ve solved a similar problem?

Thanks in advance for your advice!

Pau-son schrieb:
Is there a proven method to securely reinsert screws into the stripped holes of the KALLAX shelf?

I’m familiar with this issue, but the best solution depends on the exact material involved (particleboard, MDF, etc.) and how much load the shelf needs to support.

In many cases, it is recommended to fill the old hole with wooden dowels or specialized repair fillers to give the screw a new grip. However, you should keep in mind that IKEA furniture often consists of relatively thin material, which limits the load capacity.

A practical alternative to simple repair fillers is using thread repair kits or insert nuts, commonly used in automotive or furniture applications to replace damaged screw threads. These solutions usually require more tools and some skill.

It is important to assess the damage carefully. Using only regular wood filler often leads to the same problem recurring after a short time. Have you checked how large the damage to the hole is? Sometimes a stronger dowel or a slightly smaller hole can help create a firmer connection.

Hi Pau-son,

I had exactly the same problem with my KALLAX shelf and can recommend the following:

First, remove the old screw and wall plug, then carefully fill the torn-out hole with wood filler or repair putty. Important: allow enough time for the filler to cure completely (at least 24 hours). Next, drill a small pilot hole and use a slightly thinner screw – this provides better hold in the repaired area.

If the material is too damaged, using a wooden dowel or larger wooden plugs as filler can help. Press them in and then cover with filler – this effectively creates a new surface where the screw can hold securely.

Danial schrieb:
Thread Repair Kits or Insert Nuts

This is certainly very professional, but often too complex and costly for DIY users. For houses and shelves in private settings, the filler plus plug method is absolutely sufficient.

In my experience, this will provide reliable support for at least a few years. If the shelf is heavily loaded, I would even check multiple spots at the same time.

Tommy38 schrieb:
Give the filler enough time to cure (at least 24 hours).

I can confirm this – patience is really important here, otherwise the screw breaks while driving it in or comes loose again shortly after.

I was very worried I would have to throw away the entire shelf because the material around a hole basically “disintegrated.” What helped me was lightly roughening the damaged area first, then filling it with a wood glue and dowel mix before drilling again.

Maybe a tip for those just starting the assembly: try to be careful with the first screws and don’t overtighten them with a cordless screwdriver – flat-pack furniture doesn’t handle that very well 🙂

For anyone who wants to re-drill the hole, I recommend using screws with a slightly smaller diameter and matching anchors, and if necessary, screws with a countersunk head to reduce pressure on the material.

Pau-son schrieb:
Is there a proven method to securely reinsert screws into the stripped holes of a KALLAX shelf?

Based on common furniture repair techniques, I recommend the following:

1. Remove any debris from the stripped hole.
2. Fill the hole with a high-strength wood filler or two-component repair putty.
3. Allow the filler to fully cure (recommended 24-48 hours).
4. Redrill the hole using a small drill bit.
5. Use a screw with a slightly smaller diameter than the original.

Alternatively, you can glue in a wooden dowel and, after curing, screw into the dowel. This method provides high stability.

However, keep in mind that the KALLAX material is particleboard, which has limited load-bearing capacity.

Avoid over-tightening the screw to prevent future stripping.