... titanium bolts :Titanium and Titanium alloy specifications: 1)Common Ground a, Bolt sizes:M2-M22*lengthb, Nut sizes:M2-M22c, Standard ... :Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12,Gr23 2)Difference:a, Titanium for the chemical aspects,PCB equipment,electrodes.b, ... used in Bicycle,Motorcycles,Electric Vehicles,Medical,Aircarft,Weapons etc.We are a main manufacturer specializing in titanium products for many years ...