Torx sizes for Metric bolts.

[Taalgaardenier]

I try to find a more or less complete and logic table of Torx sizes for metric bolts.
Until now I found:
-M2>T3
-M2,5>T8
-M3>T10
-M4>T20
-M5>T25
-M6>T30 but also T27 (Stihl Titanium bolts)
-M8>T45
-M10>T50
Is anybody aware of a more complete list?
F.e. T15 did I use several times, but do not remember the bolt/thread
It seems also to me that metrical bolts/screws with Torx or Torx + head are not easy to find in Europe. This, in spite that the system is better than Allen keys/bolts.
Suppliers of steel torx bolts with strength indications as 8.8 / 10.9 a.s.o.?

 

[jccaclimber]

Note that it also depends on your head type. A button head M10 for example takes a T45.
I only deal with small stuff, so I usually just go to McMaster Carr and see what they list as the head for a given fastener type. I don't think they have a table of all types though.

 

[ratbldr427]

Don't forget that a lot of Torx Plus fasteners are now in circulation as are Torx Plus wrenches just to add to the confusion.