The hold ring includes a groove in {HEAD ~ a ring like shape} for constituting {TAIL ~ a burr storing space} at an outer periphery thereof and is welded to the inner periphery of the socket by ultrasonic welding 
for constituting
The hold ring includes a groove in { HEAD ~ a ring like shape } for constituting { TAIL ~ a burr storing space } at an outer periphery thereof and is welded to the inner periphery of the socket by ultrasonic welding
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH