made of S540N, 20MnV6 or S355 BESISTA® 540
The limit tensile forces of the extension and tensioning sleeves meet the highest load capacity of all BESISTA tension rod systems (material combination 1).
The extension sleeves with continuous, right-hand internal threads are used to extend and secure the tension rods. For additional safety the threads of BESISTA® sleeves are longer than necessary.
Note: The tension rods must be securely locked at the sleeve centre to ensure that the complete rod is turned when tensioning. The thread screw-in depth is reached when the rod threads project from the sleeve on both sides by no more than 4 thread pitches.