I have had the same problem with screws from Beijer.
 
I had the same problem with Essve’s screws, although I used them for scaffolding, spoke with Essve to point out the deficiencies but was told that I had used them for the wrong construction, but they broke no matter where they were mounted, they were completely uninterested.
 
Even high-quality screws can break. Laid decking 26 years ago and used Berner's acid-resistant stainless steel screws. They have held up excellently. Took up some decking boards a few years ago. Then some screws broke/had broken at the joint between the decking and the support beam.
 
Then you should go back and get a new box, I've never had issues with Biltema's decking screws. I have screwed about 5000 of these and never had a problem.
 
I have also had problems with Biltema's decking screws, though not the same as the original poster, but Stainless, A2 75mm. As soon as it got a bit more resistant, the screw started to twist like a spiral and began to wobble, or it simply broke off during screwing. Maybe 10% of the screws were like this. I have previously used Byggmax decking screws without problems, but needed to supplement a bit, so that's why I went with Biltema this time.
 
Biltema's screws are great. I haven't had any problems at all. None have broken. So it must have been a bad batch. So you should go back so Biltema recalls that batch.
 
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Huddingebo Huddingebo said:
Generally, stainless has significantly lower strength than "regular" steel.

Not correct. Stainless steel has higher strength than non-stainless.

However, non-stainless steels can be heat treated to become stronger if done correctly.
 
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I use Ahlgrens C4 (wood-colored) deck screws. I have driven in over 3000 without a single one breaking, stripping, or bending. When you use what is recommended by the wood supplier, it usually turns out well....
 
A AntonAnimalen said:
I only buy screws from well-known brands because I trust them.

It's important not to install the decking tightly together, as the boards will expand and the decking will warp, causing the screws to break.
I have always installed decking tightly together; decking always shrinks over time when it dries, not expands!
 
Have similar experience with Biltema screws. We built a treehouse for the children last summer, and already early in the fall we had to "close" the treehouse as screws began to break, making it all dangerous. After the winter, so many had broken that it started to collapse.
 
J Johan byggare said:
I will definitely do that, I just haven't gotten that far yet.
I just hope it won't be a problem that I lack a receipt...
You can easily solve that by going into your online bank and finding a bank statement with the date you bought them. I did that quite recently regarding a car battery that didn't last, and I got a new one. Good luck
 
J Johan byggare said:
I just want to share a warning about Biltema's decking screws, see images below. I laid 20 square meters of decking in spring 2018, the first 15 with screws of unknown brand and about 5 square meters with Biltema screws.
There is no problem with the unknown brand but now I note that about 90% of Biltema screws have simply broken.
You'll have a hard time finding worse crap, and I hope not many of you have bought and used the same junk!

[image] [image]
It is Biltema we are talking about, of course the screws break.
 
J Johan byggare said:
I will definitely do that, I just haven't gotten that far yet. Just hope it's not a problem that I lack a receipt...
Receipt is the least of the problems, they say you lack a receipt, you reply that you lack heads on the printers
 
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