M-thread in concrete?

[Mac_attack]

Hello!

I need to create an M-thread in a concrete wall, M6/M8 for lighter hanging.

Are there any reasonable alternatives to drop-in anchors? I need it for five fastenings and can only find packages of at least 50 pieces (quite expensive).

It will be used together with screw studs where the wood screw part is mounted in wood hooks.

Thanks in advance!

 

[tommib]

Isn't it easier to glue the M8 part to the wooden hook and use the screw part with a regular plug? Or thread (and glue) the wooden hook? Or embed a nut?

 

[plåtrickard]

Ask the nearest plumber..

 

[Mac_attack]

Isn't it easier to glue the M8 part to the wooden hook and use the screw part with a regular plug? Or thread (and glue) the wooden hook? Or embed a nut?

Yes, it might not be such a bad idea to turn the whole thing around.

The advantage of M8 in the wall is that it's easy to unscrew and replace, but sure, perhaps one can forgo that luxury.

Embed a nut in the wall? How do you go about it?

 

[Mac_attack]

Ask the nearest plumber..

Yes, it should be quite common. But it's impossible(?) not to buy in bulk.

 

[Trollskidan]

https://www.ahlsell.se/10/infastning/betonginfastning-df2998cb/slagankare/390836/

available in 10-pack

 

[Mac_attack]

[link]

available in 10 pack

Ahlsell requires your own company, right? Unfortunately, I don't have that.

I also prefer not to support their strange business practices (where the price only becomes reasonable after an 80% discount/personal rebate and the like).

 

[Taxture]

https://www.hornbach.se/shop/TOX-Slagankare-Impact-M8x30-100-styck/8229674/artikel-detaljer.html

I don't know if kr299:- is expensive
But maybe they have it in “bulk” too?

 

[Taxture]

https://www.vvsobygg.se/fischer-slagankare-typ-ea-ii-med-krage-9963.html

Here it seems you can buy individually

 

[Taxture]

https://www.biltema.se/bygg/fastelement/expanderskruvar/expanderskruv-10-st-2000017999

Another variant

 

[useless]

Don't know if kr299:- is expensive

Ahlsell wants 240:- for a 10-pack...

 

[Alfredo]

I have bought similar items individually in the store at Beijer.

 

[tommib]

No, embed nut, or rampamuff, in the hook.

 

[Alfredo]

Ahlsell wants 240:- for a 10-pack...

For M8x30? Their so-called list price is "only" 145 including VAT and no one pays more than around fifty.

 

[Mac_attack]

[link]

Another variant

Are wooden hooks to be fixed in the concrete wall.
But an expander with an internal thread m6/m8 is what is to be achieved.