| 摘要 |
Provided are a metal double-sided tooth that prevents a flow protruding portion from protruding from the boundary between a coupling concave portion and a body, and a slide fastener using the metal double-sided tooth. The inner side of a coupling concave portion 5 is formed in a substantially bowl shape and a concave portion 10 is formed throughout the boundary 9 between the coupling concave portion 5 and a body 6 and a front side 6a and a rear side 6b of the body 6. Further, when the metal double-sided tooth 1 is attached to a fastener tape, it is possible to prevent a flow protruding portion generated by caulking a pair of legs 2 from protruding outward from the coupling concave portion or the front side and the rear side of the body until sliding friction is generated in a slider. |
