To define the technical requirements for fasteners that have been electrolytically (galvanically) coated to provide corrosion protection or specific functional properties.
It provides tables for minimum covered layer thickness (e.g., symbols like A2K representing a specific zinc coating thickness and finish). din 267 part 9 pdf
Even though it is withdrawn, understanding DIN 267 Part 9 is essential for: To define the technical requirements for fasteners that