Sorry, but quoting from my emails doesn't make me an expert....You just read the extent of my knowledge..
Westfield's Matt Naish said that the M8 x 16 A2-70 bolt would torque to 17nm, and that's a long way short of the 25nm that my manual states.
I made my own decision not to use A2-70 for that application based on his trusted advise.
Look at the numbers and make your own mind up.
Those Titanium,Torx socket, button heads bolts look the absolute last word. Sorry I haven't a clue what the grades mean for Ti bolts, but at least the vendor states the grade clearly. Unlike the vendor of the Stainless ones...I had to zoom in on the picture to read the stamps on the heads.
Perhaps Kato, Capo or Garry could throw some light on the grades?
Just discovered that i have 18 x A4-80 Stainless M8 16mm Socket Head Cap Screws.
Up for grabs for £8 + £3 postage if anyone wants them....They are as bought , un-polished.!