Partially threaded Direct concrete fixing fasteners

[dobson156]

The last lot of builders I had in used self-threaded concrete fixing for just about everything, saving them from having to mess around with rawl plugs. They seem pretty nifty. Obviously you're not going to hang a picture frame up with them, but for other stuff they seem ideal - like fixing stud wall fame to external wall.

I've not been able to find any partially threaded screws though, wondering if there is a reason for this? I can always widen the hole in top material if I want it to pull-to but I've always like to use partially threaded for this purpose.

 

[Wayners]

Your builder used concrete thunderbolts.

You asking about plain shank screws or plain shank thunderbolts. You can get plain shank thunderbolts.

 

[foxhole]

The last lot of builders I had in used self-threaded concrete fixing for just about everything, saving them from having to mess around with rawl plugs. They seem pretty nifty. Obviously you're not going to hang a picture frame up with them, but for other stuff they seem ideal - like fixing stud wall fame to external wall.

I've not been able to find any partially threaded screws though, wondering if there is a reason for this? I can always widen the hole in top material if I want it to pull-to but I've always like to use partially threaded for this purpose.

Full thread will pull in , they are stronger than both timber and brickwork .

 

[Deluks]

Your builder used concrete thunderbolts.

You asking about plain shank screws or plain shank thunderbolts. You can get plain shank thunderbolts.

Sounds more like torx head masonry screws.

 

[Wayners]

Yeah although you can get thunderbolts with hexagon flange heads

I've never looked to see if thunderbolts are different to concrete bolts tbh