Due to a special production method developed by EJOT, the thread edges of EJOT Corremaks screws reach a particularly high strength. Thus a process-sure screw connection in steel substructures up to S320 is possible. Laboratory tests impressively prove that the edge strength suffices to form the internal screw thread. The thread edges remain intact, so that a gearing of connection element and steel beam, which is necessary for a lasting protection, is guaranteed.
With the Corremaks screw, EJOT combines the advantages of an economic and secure installation of thread moulding sealing screws with the requirement of maximum corrosion protection where it may come to high concentrations of chlorides, sulfur dioxides or further pollutants. The screw is technically approved (Z-14.1-4).