Data & Downloads

TENZ® wood building screws with innovative Stairs Thread Technology are self-screwing, made from special carbon steel, hardened and galvanised for protection. TENZ® wood building screws can be stressed both in the direction of the screw’s axis and transversely. Screw connections using with TENZ® wood building screws can be executed with pre-drilling or without.


Screw Diameter (mm)




Screw Length (mm)
Recess (TX)
30, 40, 50
blue galvanized
Partial thread


Technical Documentation

All about the world of the TENZ wood screw at a glance. Technical data & values / Calculation examples for wood joints / Assortment overview for screws & bits.

Declaration of performance

Declaration of performance for CE marking according to EN 14592:2008 . Version 01 for diameters 6 and 8mm / Version 02 supplemented by diameter 10mm.


Documents for the ETA-20/0421 of wood construction screws

The AV24 seal of approval

The AV24 seal of approval guarantees that the quality of the screws has been tested and produced in compliance with all specified testing processes. For TENZ® wood building screws, the AV24 seal of approval thus provides an essential way to stand out from the competition and proves that TENZ® screws offer the perfect bond between wood and screw.


The TENZ® wood construction screws are developed for professional use in structural woodwork. The screws were brought onto the market with a CE marking according to hEN 14592. In addition, they have an ETA approval, which gives you double protection. The declaration of performance is available as a download on this website. All technical data, declared performances and calculation examples can be found in our Technical Documentation.

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Aktion gültig bis 31.7.2022