Description of wrench size and thread diameter of a hex nut (descriptions in German)
<a href="//commons.wikimedia.org/w/index.php?title=User:Undfuld35&amp;action=edit&amp;redlink=1" class="new" title="User:Undfuld35 (page does not exist)">Undfuld35</a>
2017-02-25
<span class="int-own-work" lang="en">Own work</span>