A pair of <a href="https://en.wikipedia.org/wiki/swage_nut" class="extiw" title="w:swage nut">swage nuts</a> threaded to accept <a href="https://en.wikipedia.org/wiki/Unified_Thread_Standard#Designation" class="extiw" title="w:Unified Thread Standard">8-32 screws</a>.
<a href="//commons.wikimedia.org/wiki/User:Douglas_W._Jones" title="User:Douglas W. Jones">Douglas W. Jones</a>
<span class="int-own-work" lang="en">Own work</span>