... head, 2. colored, 3. Titanium countersunk screw titanium bicycle titanium alloy screw1, Standard: ASTM, AMS, DIN 2, Material: Gr 1, Gr ... , TA3, TC 4. 3, Technical standard: Ti ≥ 90% 4, Craft: Special unique processing technology. 5, Application: Chemical industry, aerospace, spaceflight, surgical ... , As the parts of manufacturing the cars / bikes bicycle titanium alloy screw