And by slitting the female thread, {TAIL ~ the transfer} of {HEAD ~ clamping ring force} to the engaged externally threaded part is improved 
And by slitting the female thread , { TAIL ~ the transfer } of { HEAD ~ clamping ring force } to the engaged externally threaded part is improved
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH