Hello!

I wonder if it's important to use screws specifically designed for OSB boards, or if wood screws or perhaps drywall screws will also work? What special characteristic does an OSB screw have?

Oscar
 
You should not use drywall screws as they are fully threaded. Chipboard screws, and other screws for wood, have a flat surface closest to the head so that it will pull properly.
 
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Viktorlam and 3 others
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Just bought wood chipboard screws yesterday for OSB
I got 30mm long ones for 12mm OSB.
49sek for 250 pcs at JULA, probably cheaper options available.
Go hard!
 
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Jg_almén and 1 other
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H hagv said:
You should not use drywall screws as they are fully threaded. Chipboard screws, and other screws for wood, have a smooth area near the head so they pull in properly.
I agree, but at the same time I wonder, why is the drywall screw fully threaded?
 
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Flattbeat
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Now I'm guessing, but perhaps because plaster, unlike wood, is not very elastic. If the screw had been partially threaded with a narrow "neck," it would have become loose in the hole in the plaster where the threaded part went through. If the unthreaded part had instead been thick, the plaster might have cracked. The best alternative is probably to have it fully threaded.
 
OSB or sheet metal screw and also a head that drills down into the board. Gypsum screw is smooth and presses down to provide an easily spackled surface on the gypsum, and because the surface paper strongly contributes to the strength.

If you drive a gypsum screw into OSB, there is a high risk that it will stick out slightly or break if you try to drive it into the board.
 
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MrBengtsson and 1 other
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Best answer

Mikael_L
Here's the situation.

Chipboard screw (also used for OSB and plywood) has grooves on the underside of the head, so it countersinks itself in the board.
Using a regular wood screw doesn't work as well since there's a lot of resistance when pressing the head into the wood, with a significant risk that it will instead strip the threads in the stud behind.
But if you're willing to countersink each hole manually, regular wood screws and drywall screws work just as well.

These chipboard screws should absolutely not be used for drywall, as it's very essential for the strength of the fastening in the drywall that the paper stays intact under and around the screw.
The grooves will tear the paper mercilessly, and that's a "big NONO."

Drywall screws, on the other hand, are designed with the gentlest radius imaginable, so that the paper doesn't break when you screw in and countersink the screw into the board.

If you screw in a drywall screw too far, causing the paper to tear, that fixing point is ruined; then you need to insert a new screw a few cm away and be more careful.

edit:
kind of late to the party with that... shouldn't write such long posts...
 
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Joak and 6 others
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I think it seems to work well to use drywall screws for Byggmax 10mm OSB. The head sinks in just right into the board and no screw has broken.

Could this cause future problems? Like the screws breaking when the boards move, etc.?
 
I wouldn't have taken a chance.
 
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Anonymiserad 405730
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P
O Olf Oggler said:
I think it seems to work well to use drywall screws for the byggmax 10mm OSB. The head sinks just right in the board and no screws have broken.

Could this mean future problems? That the screws break when the panels move, etc.?
Yes, there is a high risk since OSB is a harder material than drywall. Drywall screws are not strong screws when it comes to breaking point...
Buy particleboard screws instead...
 
Ahhhfyfaen for all the times the drywall screw did not sink into the OSB board.......
It went better in the plywood boards, but OSB has so much glue in it that they don't sink in.
/W
 
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