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