... screw specifications : Item nameISO 9001-2000 Qualified titanium standard partsMaterialTi Grade 2, Grade 5(Ti6Al4V), Grade 7, Ti6Al4V ELIStandardASTM B348,ASTM F67, ASTMF136,ASTMF1295 ... .8/10.9/12.9Surface TreatmentPolishing, Anodizing, Black oxideFeatureslight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength etc.ApplicationsEquipment ...