The standard (officially Mechanical Fasteners – Technical Conditions of Delivery – Components with Electroplated Coatings ) specifies the requirements for fasteners, such as bolts and nuts, that have been treated with electroplated coatings. Key Content of DIN 267 Part 9
While the original PDF is a copyrighted technical document, you can find official summaries and purchasing options through these publishers: Summarized on Fasten.one and EICAC. din 267 part 9 pdf