Warning for Biltema's decking screw

[Hallerudsbo]

I have used Biltema's decking screws for a lot of decking. In one place, I have a screw that broke off, but otherwise, I have never had problems with them. I've surely used 10-15 boxes of decking screws with a 55 length and surely 20-30 boxes with 75 screws.

 

[Jonas Persson]

Do you really think that Biltema sells tens of thousands of boxes every year that are so bad? There would be a public uproar, and it would lower their rating as a company.

A bad batch or mishandling seems to me a likely cause for this thread.

I'm personally very doubtful about using an impact driver on thin screws, that must stress the metal a lot and create microcracks that later cause the screw to break.

 

[EinZweiDrei]

Now the decking season begins again and the first thing I see on Biltema's website is an ad for the same screws I used for decking three years ago.
[image]
Does anyone know if they have developed the product or if it's the same crap as before?

The screws you used have been discontinued, but many stores still have them in stock.

 

[Lindha.L]

Had the same problem and wrote in the thread last year I believe it was. Biltema screws + new decking 2019 = lots of broken screws 2020

 

[Huddingebo]

Isn't it almost difficult to drive deck screws with such a small head into pressure-treated decking, too much. It must be able to pull down into the decking

The screw eventually breaks over time when the wood swells, dries, swells, dries, swells, etc.
I will nail mine with 4" nails. You have to hammer them down once and then it lasts forever

 

[Hallerudsbo]

The screw breaks over time when the wood swells, dries, swells, dries, swells etc.
I will nail mine with a 4" nail. You might need to hammer them in once again and then it will last forever

I haven't had that problem.
All the decking around the pool is with Biltema screws and it holds.
I've been doing it for 4 years now.

The panel around a shed I have also screwed with decking screws, and it's holding up great.

My entire terrace is built with decking screws from 2015, but under a roof, so it doesn't get wet there.

My father-in-law has 2 large wooden decks outside with Biltema screws and no screws have broken.
So I haven't had that issue.
But I also know that you get what you pay for, and I think these have good quality for the price.

 

[MultiMan]

The screw eventually breaks as the wood swells, dries, swells, dries, swells, etc. I'm going to nail mine with 4" nails. You hit them once again and they'll hold forever

Regular nails have the advantage of being soft and flexible, which is why they withstand almost any movement. All deck screws I've tried to cut have been much harder (and more brittle). It must be like that for the head to withstand the screwdriver.

 

[Huddingebo]

Perhaps it's uneven quality then.
For me, every tenth one broke when I pulled on them.

 

[Hallerudsbo]

I don't think I've ever stripped a screw either.
I only use a regular screwdriver.

 

[Jonas Persson]

Have not broken any either despite screwing in tens of thousands. But all are driven with a regular screwdriver, not an impact driver.

Of these, none have broken later either.

 

[SwiftD]

I suspect that some of these mishaps have been performed with an impact driver instead of a drill. If you look at screws like 4.2x75mm, you should realize they are significantly weaker for their task than 4.2x55. The screw is subjected to more and more stress the deeper it has to work down into the frame.

I found another decking screw at Biltema with the dimensions 4.5x55, which comes in 1000 pcs/pack. I will use it this summer with a regular drill. We'll see how it goes.

 

[Hallerudsbo]

Went to Biltema now and bought screws.
A new model of their decking screws has been released now.
They weren't good.
The bits had a poor grip and slipped very easily.
Seems shallow in the bit hole.
Then their 75 screws broke several times when I drove them in.
I was not satisfied with these.
4.8-75, probably poor sharpness so they go in slowly.
The heads were also a bit larger, so they made bigger holes.

 

[optimum]

Regarding screws. There is a certain correlation between price and quality. Who spends 20,000 kronor on pine wood materials to "save" a thousand kronor on cheap screws?

I always use quality screws for pine wood, A2 at home and A4 at the summer house on the West Coast. Simple 0 problems.

 

[Huddingebo]

Regarding screws. There is a certain connection between price and quality. Who spends 20,000 kronor on material in pine wood to "save" a few thousand on cheap screws?

I always use quality screws for pine wood, A2 at home and A4 at the cottage on the West Coast. Simple 0 problems.

A2 and A4 only indicate how well the screw resists corrosion and say nothing about how strong they are, what tensile strength they have.

 

[optimum]

A2 and A4 only indicate how well the screw resists corrosion and say nothing about how strong they are, what tensile strength they have.

Most people understand (at least I do) that A2 is stainless decking screw and A4 acid-resistant.

Because we are still discussing decking screws, right?

Is there any hardened non-stainless screw labeled A2 or A4?