Build interior wall with 45x45 studs

[evoline]

80 mm should be enough, you need to go through 45 mm wood, 13 mm gypsum, and maybe 5 mm threading = 63 mm.

Essve also has M5x100: Bauhaus

If you need even longer, you can use threaded rod with the right diameter and cut with a hacksaw to the right length, then screw on a nut at the free end.

Thanks.
Does it make a big difference whether you use M4 or M5, what is recommended?
I will need to pre-drill the wooden beam with approximately a 4-5mm drill, do I need a washer for the screw against the wooden beam?

Thanks in advance

 

[evoline]

Never and never, for the short piece of wall you're going to have, the need won't arise. Unless the family plans to mount a trampoline on the wall to toss themselves against.

Don't make it more complicated than it is because one day the wall might need to be torn down as well. The existing wall is actually a very small problem when you fasten a top runner and bottom runner to the ceiling and floor respectively, the wall becomes self-supporting and I assume you don't intend to have any major loads on the wall like kitchen cabinets etc.

Predrilled, molly plug in the right dimension, screw it in and done

Thanks for the answer.
One side of the wall will be behind the headboard for a room.
The other side of the room might have a small TV hanging in the future.
But otherwise, there won't be heavy stuff hanging.

 

[zarkov]

Thanks.
Does it make a big difference if you use M4 or M5, what is recommended?
I will need to pre-drill the wooden stud with about a 4-5mm drill bit, do I need a washer for the screw against the wooden stud?

Thanks in advance

The screw diameter won't matter in your case; the load is so small. However, a washer under the screw head is recommended.

 

[evoline]

The screw diameter won't matter in your case; it's such a small load. However, a washer under the screw head is recommended.

Thank you.
Is 8 enough in the ceiling when the beam is 320cm, about 45cm between each screw?

And for the beams on the wall, 6, with a ceiling height of 240cm.

Is it too many or too few?

Thanks in advance.

 

[zarkov]

That's enough, I think I had 4, possibly 5 screws over 3 m when I put up my sliding doors (3 in the walls).