<a href="https://en.wikipedia.org/wiki/Bolted_joint" class="extiw" title="en:Bolted joint">en:Bolted joint</a> utilised in construction of a bridge.
<a href="//commons.wikimedia.org/wiki/User:Thermos" title="User:Thermos">Thermos</a>
<span class="int-own-work" lang="en">Own work</span>