Other mechanical fasteners, connectors and connections in timber construction
Timber fasteners and connectors are used to permanently connect timber elements to other elements.
Regulatory framework
DIBt grants national technical approvals (abZ) for mechanical fasteners and connectors in timber construction
- when they are not covered by the harmonised standards and
- when they deviate significantly from the Technical Building Rules (cf. MVV TB, Chapter C 2) or
- when neither Technical Building Rules nor generally recognised technical rules exist (e.g. innovative products).
European Technical Assessments (ETAs) can also be issued for fasteners and connectors that are not (fully) covered by a harmonised standard.
DIBt grants general construction technique permits (aBG) for connections executed with timber fasteners or connectors when there is no conclusive technical rule for design and execution.
National procedure
To prepare an abZ/aBG for your construction product, we need an application from you. We recommend that you contact us prior to doing so. Feel free to send us your enquiry informally via email to dibt(at)dibt(.)de or to the competent technical contact listed in the top right.
For a first assessment, please send us the following information:
- Description of the construction product and its intended field of use
- e.g. material, configuration, number of sizes, variants, dimensions
- e.g. use in walls, ceilings, interior construction, building services
- Description of the construction technique and its field of application
- e.g. design of walls, ceilings, elements, etc., and interaction of components
- e.g. application in foundation engineering, reinforced concrete construction, building insulation; as load-bearing or non-load-bearing component; under static and quasi-static loading; fire exposure; other environmental exposures
- Information regarding impact on regulatory concerns
- in particular structural integrity, fire protection, health and environment protection, sound insulation as well as thermal performance
- Explanation of need for an abZ/aBG
- Do you significantly deviate from the Technical Building Rules?
- Or do neither Technical Building Rules nor generally recognised technical rules exist?
- Contact details
- preferably email address and/or telephone number, as well as name, organisation/company, and postal address
We will then contact you to clarify the next steps.
If you already hold a DIBt approval and/or construction technique permit and wish to apply for an amendment, supplement, or renewal, please use the form provided below.
- pdf-Datei Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages ) Last updated: 10 April 2024; Application form
European Technical Assessment (ETA)
To start the ETA procedure, please submit the form below. We will then check if the prerequisites for issuing an ETA are met, i.e., in particular, if the product is not fully covered by an existing harmonised standard. If the prerequisites are met, we will check whether a European Assessment Document (EAD) covering the requested assessment scope already exists or still needs to be developed. If an EAD needs to be developed or amended, a complete technical file needs to be established before the procedure can begin.
- pdf-Datei Form for requesting a European Technical Assessment (ETA) (2 pages ) Last updated: 11 March 2025
| Subject concerned | Applicant | Decision no. |
Validity
from / to |
|---|---|---|---|
| Merk-Gewindeanschluss (MGA) als Hirnholz-Verbindungsmittel (Stützenfußanschluss) | ZÜBLIN Timber GmbH Industriestraße 2 86551 Aichach | Z-9.1-264 |
Z:
20.01.2026 G: 19.12.2030 |
| Verbindungen unter Verwendung von Hoffmann-Schwalben | Hoffmann GmbH Mergelgrube 5 76646 Bruchsal | Z-9.1-436 |
Z:
26.07.2022 G: 02.08.2027 |
| Pfosten-Riegel-Verbindung für Holz-Glas-Fassaden | Seufert-Niklaus GmbH Lindenweg 2 97654 Bastheim | Z-9.1-658 |
Z:
17.09.2022 G: 03.09.2027 |
| LANG Pfosten-Riegel-Verbindungen für Holz-Glas-Fassaden | Walter Lang GmbH & Co. KG Robert-Bosch-Straße 4 75031 Eppingen | Z-9.1-688 |
Z:
02.11.2023 G: 02.11.2028 |
| Schraubdübel ejotherm STR H A2, STR H E, STR H und EJOT HFS zur Befestigung von Wärmedämm-Verbundsystemen auf Außenwänden und an Decken in Holzbauart | EJOT SE & Co. KG Astenbergstraße 21 57319 Bad Berleburg | Z-9.1-822 |
Z:
02.05.2024 G: 02.05.2029 |
| FT-Dämmputzschrauben DPS zur Befestigung von Wärmedämm-Verbundsystemen auf Außenwänden in Holzbauart | Friedr. Trurnit GmbH Rahmedestraße 161 58762 Altena | Z-9.1-877 |
Z:
09.12.2022 G: 10.11.2027 |
| fischer termoz 6 H Dübel zur Befestigung von Wärmedämm-Verbundsystemen auf Außenwänden in Holzbauart | fischerwerke GmbH & Co. KG Klaus-Fischer-Straße 1 72178 Waldachtal | Z-9.1-887 |
Z:
30.07.2024 G: 19.06.2026 |
| EiSYS-P und EiSYS-H Fassadenschrauben zur Befestigung von hinterlüfteten Fassadensystemen in Untergründen aus Holzbaustoffen | E.u.r.o. Tec GmbH Unter dem Hofe 5 58099 Hagen | Z-9.1-897 |
Z:
15.10.2025 G: 15.10.2030 |