Headbolt ID 95 A6q

[TooManyAudis at aol.com]

Does anybody know what the official name is for the headbolt with what  
appears to be an external torx or external poly drive head?  Correct tool  for 
dissasembling?
 
Thanks,
 
Tom
 
1995 A6q  5-speed (up for interesting offers) 220k
1988 80q (sold, and still going  strong!) 250k+
1991 200q20v towed away in the middle of the night by a VW  diesel pickup 
275k+
1985 4kq a freakin' beast of a car! 275k+ and presumably  still going
1987 4k died in a hit and run 250k+
1983 4k Very first Audi 35  to 38 mpg.  Victim of crank key failure  300k+
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