expansion plug symbol

expansion plug symbol fastener anchor wall mounting hardware construction installation fixing support bolt sleeve mechanical attachment threaded insert pipe fitting industrial equipment tool reinforcement securing component structural support wall plug anchor fastening device building installation assembly equipment mechanical fastener expansion anchor securing system hole plug anchor bolt support wall fixing assembly tool installation component structural hardware pipe anchor mounting support reinforcement device fastening aid industrial anchor construction plug attachment tool mechanical component securing system wall reinforcement threaded plug assembly installation aid fixing hardware expansion fitting wall insert mounting aid mechanical anchor construction accessory securing device industrial fastener support system attachment tool reinforcement plug symbol fastening element