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Expansion screw bolts are typically made of high-quality materials such as stainless steel, carbon steel, or alloy steel to provide strength and corrosion resistance. They are available in various sizes, thread types, and configurations to accommodate different project requirements. Some bolts may have hexagonal heads for easy installation with a wrench or socket, while others may have flat or round heads for a flush finish.

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HEBEI YUETONG FASTENERS powder coated carriage bolts