lag bolt
A heavy, coarse-threaded screw having a blank" >square or hexagonal head driven by a blank" >wrench, used in areas inaccessible to the blank" >target="_blank" >glossary/placement/" class="glossaryLink" data-cmtooltip="0b7b00acf769fb51429969c9d1b19814" blank" >target="_blank" >placement of a nut or where an exceptionally long bolt would be needed to blank" >target="_blank" >glossary/penetrate/" class="glossaryLink" data-cmtooltip="496f42d1e50f05c28cbfb32cd57e0434" blank" >target="_blank" >penetrate a joints/" class="glossaryLink" data-cmtooltip="c5df3d06abf75615bdf40ab3e739261d" blank" >target="_blank" >joint fully. (Ching, 1995)
