Allied Titanium 0040211, (Pack of 12) M3-0.5 Pitch X 8mm Socket Head Titanium Machine Screw, Grade 5 (Ti-6Al-4V) M3-0.5 Pitch X 8mm 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/-0.18 mm Meets ISO 4762; Grade 5 (Ti-6Al-4V) Titanium with Polished Finish