... of Titanium Alloy and Nickel alloy and other alloy metal.B.Bolts, Screws, Nuts and thread rods Titanium Alloy, Nickel alloy ... thread rod of American standard, Metric standard and Imperial standard. B. Bolt's head style with Allen , button head Allen , button head ... (DIN84, DIN85); M2.5 / M3.0 (DIN 912, DIN933, DIN963); b&. GR2, GR5 M4.0 to M24,Bigger M24 and especial ...