Pure Titanium Bolt: 1.Material: Gr1, 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, Gr7, Gr9, Gr122. Standard: ASTM F67, F136 DIN 933, 912, 934 ...