... Titanium and Titanium alloy specifications: 1)Common Ground a, Bolt sizes:M3-M22*length b, Nut sizes:M3-M30 c, Standard:GB,DIN,ASME ... ,BSW,UNC,JIS d, GRADE:Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12 2)Difference: a, Titanium for ... We are a main manufacturer specializing in titanium products for many years.Titanium bars, tube and sheets, titanium fasteners, .titanium nuts, bolts, washers, machine screws, ...