Titanium Aircraft Bolts

Titanium aircraft bolts are the fasteners that hold aircraft and spacecraft together - the combination of high strength, light weight, and corrosion resistance makes titanium the standard for aerospace fastener applications. Every kilogram saved in fasteners reduces the aircraft weight that the structure must support, so the lightweight of titanium directly translates to fuel savings or payload capacity. Ti-6Al-4V is the standard aerospace titanium alloy - the alloy provides good strength, good corrosion resistance, and the most comprehensive qualification testing and supply base. Ti-6Al-4V ELI (Extra Low Interstitial) has lower carbon, oxygen, and nitrogen content for better ductility and fracture toughness - specified for fatigue-critical applications where those properties matter. ASTM F468 and AMS 4965 define the requirements for titanium bolts in aerospace applications - the specifications cover composition, mechanical properties, dimensions, and testing requirements. The documentation requirements for aerospace fasteners include material test reports and heat batch traceability. The passivated surface is standard for titanium fasteners - the surface treatment removes the alpha case from machining and restores the chromium oxide layer that provides corrosion resistance. Anodizing is used where a colored finish is specified for identification or appearance.