The clasp will resist tension, which is the most frequent force acting thereon during use, by {HEAD ~ the coupling force} provided by {TAIL ~ the mechanical engagement}, so that it will never decouple of itself 
provided by
The clasp will resist tension , which is the most frequent force acting thereon during use , by { HEAD ~ the coupling force } provided by { TAIL ~ the mechanical engagement } , so that it will never decouple of itself
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH