This second part 4 has, on its end side, a recess 5 into which, during the application, {HEAD ~ the cap part} 2 is introduced, centered and clamped in {TAIL ~ place} 
This second part 4 has , on its end side , a recess 5 into which , during the application , { HEAD ~ the cap part } 2 is introduced , centered and clamped in { TAIL ~ place }
OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL