Nuts threadedly engage {TAIL ~ the posts} to engage the conductive bar securely to {HEAD ~ the posts} 
Nuts threadedly engage { TAIL ~ the posts } to engage the conductive bar securely to { HEAD ~ the posts }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD