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.