Cooper & Turner: Blade to hub studs

Fasteners

This Industry Standard has been produced by a technical working group representing all parties of the supply chain for fasteners used in wind turbines.

Introduction

This technical specification defines the naming convention and how to interpret the used syntaxes. The specification provides the possibility to cover all DIN, EN, and ISO standards related to fasteners, including bolts, studs, nuts, and washers.

The specification covers dimensions, materials, coatings, supplementary requirements, identification/markings, certificates, packaging requirements, and key qualification deliverables. The specification also provides a list of topics that needs to be addressed during the qualification of new suppliers / existing suppliers. Requirements for friction-controlling topcoats applicable for zinc flake coatings, dry-to-touch lubricants for stainless steel products, and pre-lubricated products with a wet lubricant are also addressed. It furthermore specifies specific requirements for the type of product, e.g., geometrical requirements.

The Wind Turbine Manufacturer reserves the right to perform destructive and non-destructive inspections of the received products by using the inspection procedure described in ISO 3269-1 to verify that the purchased products meet the specified technical requirements. 
 

Title:

Fasteners - Technical Specification

Revision Number:

1st edition

Revision Date:

May 2022

Maintenance Date:

May 2025

Main Contributors: 

Michael Perolle Jensen, Siemens Gamesa
Kristoffer Isbak Thomsen, Vestas

Maintenance Team:

 August Friedberg GmbH
 Cooper and Turner Ltd
• Dokka Fasteners AS
• Envision Energy 
• Erreka fastening solutions
• F. REYHER Nchfg. GmbH & Co. KG
• GE Wind Energy
• ITH Fasteners
• Nordex SE
• Peiner Umformtechnik
• Schraubenwerk Zerbst GmbH
• Siemens Gamesa
• TSF – global fastening solutions
• Vestas 

Buy the Industry Standard

The Fasteners - Technical Specification can be purchased by contacting the APQP4Wind Secretariat at industrystandards@apqp4wind.org.
If your company is not APQP4Wind Company Member, please fill in the document 'Purchase Info - Industry Standard' (find it on the right side of the page), and send it to the Secretariat along with your inquiry. 

Price:

  • EUR 500 for a company license 
  • EUR 400 for a company license for companies with APQP4Wind Company Membership (20% off)


Preview of the Industry Specification: Fasteners - Technical Specification*

*Not Printable

Do you want to contribute?  

If you have any comments or suggestions on the Industry Standard for Fasteners, or if you want to be a part of the maintenance team, please send an e-mail to industrystandards@apqp4wind.org. Everyone is welcome to participate and share new ideas.  

 

Contact
Per Hesselund

Per Hessellund Lauritsen

SGRE OF TE, Siemens Gamesa Renewable Energy