This sub assembly is manufactured by making {HEAD ~ a pattern} of apertures in {TAIL ~ a planar element}, thereby forming a number of securing elements 
in
This sub assembly is manufactured by making { HEAD ~ a pattern } of apertures in { TAIL ~ a planar element } , thereby forming a number of securing elements
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH