Allied Titanium 0017010, (Pack of 10) 1/4-20 X 1 UNC Socket Head Machine Screw, Grade 2 (CP) 1/4-20 X 1 UNC 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/-0.003 inch Meets ASME B18.3; Grade 2 (CP) Titanium with Polished Finish