ᐅ Screwing in shelf screws without over-tightening.

Created on: 4 Oct 2016 08:42
K
Kimo60
Hello everyone,

I recently bought a Billy bookshelf from IKEA and now face the challenge of tightening the screws properly without over-tightening them. I understand that over-tightening the screws on this model can damage the wood and affect the stability of the shelf. Unfortunately, I haven’t found clear guidance on the recommended torque or procedure to safely tighten the screws enough without causing damage.

Does anyone have experience or tips that could help me screw them in correctly while protecting the material? Are there specific techniques or tools you would recommend for the Billy bookshelf to avoid over-tightening?

I appreciate any helpful advice!
J
jakar
4 Oct 2016 13:02
You can’t always rely on feel alone. For Billy shelf screws, you can also use the torque setting on your cordless drill, if available. 2-3 Nm (18-27 in-lbs) is usually sufficient.

If your drill doesn’t have torque settings, it’s better to tighten the screws by hand.
J
Josan
4 Oct 2016 14:45
Hello Kimo60,

I wanted to add: Most problems with over-tightening occur when screws are driven in too quickly or too much force is applied right from the start.
dota57 schrieb:
When using a cordless screwdriver, the torque setting is crucial.

I completely agree with that.

It can also help to pre-drill the holes, especially if your Billy shelf already indicates this – sometimes the holes are a bit tight, which increases the stress when driving in screws.

In your case, this is probably not necessary, but if you want to drive the screws in by hand: turn them smoothly without crushing the screw head, and everything will stay intact!
L
LENNAU
4 Oct 2016 16:30
ritotar schrieb:
By the way, sometimes it helps me to lightly (!) coat the screws with a bit of wax or soap on the threads.

That’s a good tip when working with wooden dowels. However, I recommend using only a small amount to avoid introducing lubricants into the wood that could weaken its durability. Better to test carefully.
LAYNE schrieb:
I always do the final turn by hand.
That’s exactly how I work as well; it allows you to feel the resistance best and prevents the screw head from being damaged by the power tool.

Thanks for the helpful tips here, Kimo60 has surely gathered some useful pointers.
K
Kimo60
5 Oct 2016 08:20
Thanks for all the replies, really helpful!

I first inserted the screws by hand and then tightened them with a cordless drill—making sure to use a low torque setting, as recommended.

One thing I’m still a bit unsure about:

How can I tell exactly when a screw is tightened "enough"? I feel like I’m about to overtighten when the resistance gets strong, but I don’t have a reliable reference. Even with the final turn by hand, sometimes I worry I’m either not tightening enough or that I’m crushing the wood.

Are there any rules of thumb or typical signs to watch for? Thanks again!
D
dota57
5 Oct 2016 09:32
Kimo60 schrieb:
How can I tell exactly when a screw is 'tight enough'?

Unfortunately, this is often a subtle matter that requires experience. When the screwdriver becomes noticeably harder to turn, it generally indicates that the screw is tightening.

Pay close attention to whether the anchor or plug rotates along with the screw—if it does, that means it’s overtightened.

As a guideline, I would say: When you feel that the screw requires significantly more force to turn further, it has likely reached the proper hold.

Avoid sudden or jerky movements, as these usually indicate overtightening.
R
ritotar
5 Oct 2016 10:06
Maybe this little trick will help you: Listen carefully while you screw in. Often, you can hear a slight cracking or a soft "creaking" sound in the wood when you over-tighten. That’s the signal to stop.

And don’t worry: If the screw is tight and the shelf is stable, it’s usually enough. Just stay relaxed and think of it as a small DIY adventure. 🙂