The bolt has {TAIL ~ a threaded shank} and {HEAD ~ at least one lug} means extending from the threaded shank 
The bolt has { TAIL ~ a threaded shank } and { HEAD ~ at least one lug } means extending from the threaded shank
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH