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