Racing titanium bolt and nut in color 1) Size:M3~32 2) Grade:Gr5 3) Color:Gold,Blue,Purple,Green etc 4) ... GR1,Grade2,Grade5(Ti6AI4V),GR92. Standard: GB, DIN, IFI, UNC, JIS, BS, BSW, ISO3. Production Description: 1) Color: Gold, Blue, Purple, ... .Surface Treatment: Polishing, Anodizing, Black oxide6.Material: Titanium alloy and pure titanium7. Applications: Chemical industry, Medical field, Aeros pace ...