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DIN 6880:2011
Bright key steel - Dimensions, tolerances, mass
This standard applies to bright key steel as squares or flats in bars with the dimensions given in the tables.*This standard applies for bright key steel (bright steel for the manufacturing of keys and parallel keys) in bars with square, rectangular or flat rectangular cross-sections and is an important basis for production quality of these steel products. The responsible German standardization committee is Subcommittee 21/1 "Maßnormen für Langerzeugnisse - Blankstahl" ("Dimensional standards for long products - Bright steel") of the Iron and Steel Standards Committee (FES).
Deutsches Institut für Normung [din]