The various racing titanium hexagon socket screw and titanium bolt, taitanium fasteners M3--M16XLmm DIN,JIS, UNC ... of refractory and special metals, such as cp titanium,6 Al-4V titanium, in DIN, JIS, ASTM specifications. Also supply according ... ,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12,Gr23 titanium hexagon socket screw