1.Size : M 2 ~ M 22 . 2.Material: Titanium and titanium alloy 3. G r 1 , ... 3 , G r 4 , G r 5 . M 2 ~ M 22 Titanium Screws1,Standard : ASTM F67 , ASTM F136 , GB/T 13810 ... r 4 , G r 5 .3,Size : M 2 ~ M 22 .4,Screw Varieties : the first cylindrical titanium screw , titanium head ... grinding machines and the advanced polishing units . M 2 ~ M 22 Titanium Screws