The fastener body 12 can be made out of {HEAD ~ any suitable material} such as hardened aluminum or {TAIL ~ galvanized steel} 
such as
The fastener body 12 can be made out of { HEAD ~ any suitable material } such as hardened aluminum or { TAIL ~ galvanized steel }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL