Need help finding the correct screw driver

[WJH308]

My L1011 throttle quadrant is riddled with screws that use some kind of 3 prong screwdriver. I do not know if this is unique to Lockheed or widely used in the industry.
Theres many different sizes of bolts that use this pattern so I will need a screwdriver set. Heres a picture of it, if anyone can tell me the name of this pattern or where to buy the screwdrivers, would be greatly appreciated, thanks!

[Rodney]

That is a torque or torx tip. Most likely unique to Lockheed. Try a web search, harbor freight, etc. We had those on the first blocks of F-16's and the were phased out over the years. Hope that helps some.

[WJH308]

Thanks for the help, your information led me to find this page, actually is a tri-wing
http://en.wikipedia.org/wiki/Tri-Wing
And THANK GOD for Mcmaster Carr for selling them, love that supplier!
http://www.mcmaster.com/

[Michael Carter]

I have a few of those bits in a set. You can likely find those at MSC or McMaster-Carr

Torx is a six-point star shape.