Screw for attaching stair railing

[AlfredJ]

Hello.

I have ordered 4 aluminum posts for a glass railing I will have by the stairs.
The base of the posts has 12mm holes
And the thickness of the plate is 10mm

I simply wonder where I can find fitting screws that also look somewhat good.

The substrate consists of 8mm laminate, and 2 layers of 22mm chipboard

I found a picture online that is basically how I would like it.
Where can I find these screws?

 

[Liteavvarje]

The ones you show are a type of carriage bolt and have a nut on the underside. VVS-skruv are coarse and good as well as stainless with a star to screw against http://www.biltema.se/sv/Bygg/Faste...uv/Rostfritt-A2/VVS-skruv-rostfri-2000034242/

 

[AlfredJ]

Yes, you could have guessed that it wouldn't be so smooth.

The problem with the screw linked to is that I would have to put a washer under it. Which doesn't feel very stylish.

 

[Peter2400]

I had used screw studs and some matching cap nuts, then it's also possible to loosen the railing if needed without compromising the fastening to the floor.
We needed to do that once when we were bringing up a 160 bed that we had carried down when we didn't have any stair railing.

 

[AlfredJ]

Looked a bit at that type too.
But haven't found any where the nut itself is less than 10mm

Then m6 is probably the largest that fits

Have to look around a bit.
It will be exciting to see if one manages to drill straight enough

 

[AlfredJ]

I saw it at Biltema too.
Probably going to get one.

Just make a countersink in the floor where the nut goes down. That should give it a good tension!

 

[Anonymiserad 156538]

Hi.

I'm simply wondering where I can find suitable screws that also look somewhat good.

The base consists of 8mm laminate and 2 layers of 22mm floor chipboard.

I found a picture online that is basically how I would like it.
Where can I find these screws?

The picture shows posts from räckesbutiken, and those are plastic caps you see, which cover ordinary French screws that hold the posts.

I replaced these with 25cm long screws I found at Hornbach so I could anchor my railing in the concrete slab underneath and not just fasten it to the framed floor. There are quite large forces when leaning on 1m long posts

 

[AlfredJ]

But does the railing store have a recess in the posts so that the head goes down into the actual railing then?

My hole is 12mm straight through

Yes, that's what you're a little afraid of. That it might be too flimsy, I mean. It's not so fun to fall down 3m

 

[Liteavvarje]

12 mm hole and a bolt straight through or French type 10 cm into good wood holds a car of smaller size, you should have four fastenings, so the risk you fear is exaggerated, worse if someone climbs over.

 

[Anonymiserad 156538]

But does räckesbutiken have a countersink in the posts so that the head goes down into the actual railing then?

My hole is 12mm straight through

Yes, that's what I'm a little afraid of. That it will be too weak, I mean.
It's not so fun to fall down 3m

Yes, they do, it looks like this, the only picture I found was from a year ago when I put up the railing.

 

[Liteavvarje]

I would probably aim for what Peter2400 says with a nut cap, one of those covers up and looks nice, and four fastenings make it strong, just make sure there is something to grip underneath, and first drill with a drill that is 2 mm thinner than the core of the screw part, then it bites well into the chip, otherwise the chip splinters out on the backside.

 

[AlfredJ]

Yes, it looks like this, the only picture I found was from a year ago when I set up the railing.

On the posts I have, there is of course no countersink. Just a hole straight through.

Could you try to measure approximately how thick the material is on the plate?
Looks like the total thickness is similar to what I have.

Thinking that one could mill the holes to create a countersink.
Then attach with lag screws
Oh then put a cover cap over each.
That should look nice.

 

[Anonymiserad 156538]

The wall thickness is 16mm on mine. Since I don't want to lock the wooden floor, I made a special arrangement. Drilled large holes through the wooden floor so it can move and then used a washer against the chipboard below and a pipe coupling to get the height against the post. The posts tighten against the chipboard that is raised on the concrete slab.

 

[AlfredJ]

Double-checked the thickness of the bottom plate again.
And it's only 10mm.
Feels like there are only two ways to go.

Either what Peter2400 wrote.
Or visible French screw/screw with dome nut.

Typically one of those things you don't think about when buying a railing.

 

[AlfredJ]

What do you think? Is M6 size enough?
Or should I go up to M8?

M6 was conveniently available at Biltema
M8 I have to order home