... fastener, Titanium screw, Titanium nut, Titanium washer etc.Item nameTitanium fastenerMaterialTiGrade2,Grade5(Ti6AI4V),Grade7,Ti6AI4V ... Surface TreatmentPolishing, Anodizing, Black oxideFeaturesLight weight, acid and alkali resistance, anti-corrosion, excellent mechanical strength ... chemical processing, marine, military, oil, tooling, racing and others.3. Customer service : Our quality of service, ...