titanium nut bolt screw fastener Standard:DIN,ASTM,GB,BSW,UNC,JIS Technique:forging, ... Parts 1.Standard:DIN or Non-standard 2.Grade:Gr2 and Gr5 3.Surface:Polishing, Anodizing, Black oxide Item NameTitanium Standard ... PartsMaterial Pure Titanium and Alloy TitaniumGradeGr2 and Gr5 (Popular Grade)Gr1,Gr3,Gr4,Gr9,Gr11Standard DIN ...