| 摘要 |
A fastening member includes a root portion, and a driven portion. The root portion has a first end and a second end and has a mediate portion formed with two elongated slots. The driven portion has an end extended from the first end of the root portion so that the root portion is combined with the driven portion to form a substantially L-shaped body. The root portion is arcuate between the elongated slots and a flat tip portion defining a penetrating point thus providing flat outer edges and flat tip.
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