In the case of the exemplary embodiment according to FIG 9, {HEAD ~ the cap} 7 again has {TAIL ~ a cutting ring} 31 overlapping the sleeve 3 on the outside and having a multiple, steep thread 32 
has
In the case of the exemplary embodiment according to FIG 9 , { HEAD ~ the cap } 7 again has { TAIL ~ a cutting ring } 31 overlapping the sleeve 3 on the outside and having a multiple , steep thread 32
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH