the securing means are inserted into a plurality of {HEAD ~ first apertures} of {TAIL ~ the insulating plate} and secured therein to form the sub assembly 
of
the securing means are inserted into a plurality of { HEAD ~ first apertures } of { TAIL ~ the insulating plate } and secured therein to form the sub assembly
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH