The head portion of the fastener comprises {HEAD ~ a beveled ring gear} 92 which is similar in structure to the ring gear 14 of the fastener 10 and is engageable with {TAIL ~ a pinion type gear} 94 of the drive tool 
is engageable with
The head portion of the fastener comprises { HEAD ~ a beveled ring gear } 92 which is similar in structure to the ring gear 14 of the fastener 10 and is engageable with { TAIL ~ a pinion type gear } 94 of the drive tool
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 OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH