ScrewChina Hexagon Socket Head Cap Screw Bolts DIN912, DIN7984, DIN6912, ISO 4762, Uni 9327, BS 2470, JIS B 1176, ASME/ANSI B 18.3, ASTM A574; GB /T 70.1-2, Find details about China Bolt, Hardware from Hexagon Socket Head Cap Screw Bolts DIN912, DIN7984, DIN6912, ISO 4762, Uni 9327, BS 2470, JIS B 1176, ASME/ANSI B 18.3, ASTM A574; GB /T 70.1-2