| 摘要 |
An anchor bolt is provided to improve coupling force against external shock and prevent the abrasion of thread parts against hammering. A hammering piece(12) is protruded outward from an end surface, that is, a hammering surface, and a cutout part(13) is formed with at least one or more securing grooves(14) at the other end surface. The cutout part is inserted by a wedge(20) for forming a space, wherein the wedge is formed with securing protrusions(21) at both side surfaces for preventing the wedge from escaping out of the securing groove of the cutout part. A top surface of the anchor bolt, which is formed with the cutout part, is formed with a concave indent part(16) in the center.
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