Rock concrete screw, countersunk head

Galvanised steel

The practical alternative to traditional plugs
The rock concrete screw is a special screw for anchoring in concrete (C20/25 to C50/60 normal concrete) and is covered by a European Technical Assessment for anchorages in cracked and non-cracked concrete. The rock concrete screw is screwed directly into the drill hole without a plug or other additional components. As it is screwed in, the thread cuts a mating thread into the subsurface. This type of installation is not only very easy, but also impresses with its minimum assembly time and maximum cost savings. The high-strength screw steel, an extremely complex annealing process, and a special thread ensure that the rock concrete screw also works reliably in class C50/60 high-strength concrete.
Advantages and properties 

• Installation without plugs 
• High extraction-resistance values 
• No expansion effect, so smaller edge and centre distances are possible 
• Broad range of applications thanks to a variety of screw heads and screw diameters 
• An economical fastener 
  • Time savings during installation 
  • Cost savings in materials 
• Time-saving and straightforward installation 
  • Setting and installation process performed in a single step 

Notes

• Drill hole produced only by hammer drilling
• Setting parameters must be adhered to strictly
• Used only in C20/25 to C50/60 normal concrete

* Screws not regulated by ETA-15/0886