A method of heat treating a coiled steel spring, wherein {HEAD ~ said coiled steel spring} has {TAIL ~ opposite free ends}, said method comprising the steps of: 
has
A method of heat treating a coiled steel spring , wherein { HEAD ~ said coiled steel spring } has { TAIL ~ opposite free ends } , said method comprising the steps of :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH