The rearward end of the plug pin 30 is held by {HEAD ~ a pin} mounting 33, onto whose rear end 34 {TAIL ~ a helical spring} 35 is pushed 
mounting
The rearward end of the plug pin 30 is held by { HEAD ~ a pin } mounting 33 , onto whose rear end 34 { TAIL ~ a helical spring } 35 is pushed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH