Allied Titanium 0016838, (Pack of 12) M5-0.8 Pitch X 16mm Metric Socket Head Machine Screw, Grade 5 (Ti-6Al-4V) M5-0.8 Pitch X 16mm Socket Head Allied Titanium Machine Screw TRUE TITANIUM(TM) - Stronger, Lighter and Corrosion Free Titanium is good for use in or near saltwater General Tolerance: +0/-0.22 mm Meets ISO 4762; Grade 5 (Ti-6Al-4V) Titanium with Polished Finish