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