| Old norm | DIN 7999 | High strength hexagon fit bolts with large widths across flats for structural steel bolting |
| Current norm: | DIN EN 14399 | High-strength structural bolting assemblies for preloading - Part 8: System HV - Hexagon fit bolt and nut assemblies |
| Current release: 2008-03 | ||
| Changes: | Klemmlänge neu definiert und Werte entsprechend geändert Nenngröße M36 aufgenommen |
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| Drawing: |  |
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