... , 2, 3, 4, 5, 7, 9, 12 2.Standard : ASTM, DIN, GB/T 3.Parts: bolt and nut 4.Woodencase Pure Titanium ... Bolt: 1. Material: Gr1, Gr2, Gr3, Gr4, Gr5 ... , titanium slot word screw, titanium cross slot screw.7. Parts: bolt and nut8. Intrinsic Quality: No organization segregation, no high density ...