... 2008 4)High-grade material 5)Corrosion resist Titanium Bolts and Nuts 1. Certificate: ISO 9001, ASTM 2. Chemical ... 0.9bal 3. Detailed Information Item NameTitanium Bolts and NutsMaterialPure Titanium and Alloy TitaniumGradeGr1,Gr2,Gr3,Gr4,Gr5(Ti ... M4-M64Surface TreatmentPolishing, Anodizing, Black oxideFeatureslight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength etc. ...