In this annular space section, the pin is provided with a groove which is tapered such that {HEAD ~ the diameter} of the pin increases towards {TAIL ~ its open side} 
increases towards
In this annular space section , the pin is provided with a groove which is tapered such that { HEAD ~ the diameter } of the pin increases towards { TAIL ~ its open side }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL