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