... with round head screw, Hex socket button head cap screw.hexagon button head cap screw, screw fastener.Material: Alloy SteelStrength Grade ... Treatment: Black Oxide PROFILE OF EAGLE METALWARE:*EAGLE METALWARE CO., LTD is one of the largest manufacturers ofHigh Tensile ... Socket Head Cap Screws (DIN912, DIN913,DIN914,DIN915,DIN916, DIN7991, ISO7380, ...