(not the official document), many engineering handbooks and fastener supplier websites (e.g., Bossard, Wurth, MISUMI) publish summary tables based on DIN 911.
I cannot directly provide or link to a PDF copy of the standard, as DIN standards are protected by copyright and sold by Beuth Verlag (the official publisher). However, I can guide you on how to obtain it legally and provide the key technical details. din 911 pdf
Tool holders (e.g., hydraulic chucks, ER collets) require specific hex keys to tighten the nut to a precise torque. If the key is too short (l2), you cannot achieve leverage. If the key is too long, it might hit the machine spindle. The DIN 911 PDF provides the standard lengths to design around. (not the official document), many engineering handbooks and
The DIN 911 standard applies to "L-shaped" and "T-handle" hexagon keys. Within the PDF document, you will find detailed tables specifying: Tool holders (e
Older versions of DIN 911 (pre-1990s) may differ from current ISO harmonized versions. Always check the revision date on your PDF.
Here are the best sources for a free, reliable DIN 911 PDF equivalent: