Drop in Anchor, DIN912 Hex Socket Head Cap Screw, Sleeve Anchor manufacturer / supplier in China, offering DIN6921 Yellow Zinc Plated Grade 10.9 Hex Flange Head Cap Screw Alloy Steel Flange Bolt with Serration or Without Serration, Factory Supplied Galvanized Carbon Steel Expansion Drop in Anchor Bolt for Ceiling Construction, Grade 10.9 ISO7379 ASME B 18.3 Hexagon Socket Head Shoulder Screws ISO 7379 Black Oxide Alloy Steel Hex Socket Shoulder Bolt and so on.