If the first member is not counter bored to provide a retaining shoulder 50 as shown in FIG 4, Prior to assembly, {HEAD ~ any necessary annular grooves} are defined in member 11 or member 13 to receive {TAIL ~ retaining snap rings} 51 
If the first member is not counter bored to provide a retaining shoulder 50 as shown in FIG 4 , Prior to assembly , { HEAD ~ any necessary annular grooves } are defined in member 11 or member 13 to receive { TAIL ~ retaining snap rings } 51
OTH OTH OTH 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 HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH