Slider of slide fastener

This invention provides a slider for use in sport goods, and its surface is smooth without any protrusion thereby providing no danger to a user. On a top surface of an upper wing (2) of a slider body (1) for slide fastener, a thread attachment portion (10) for attaching a thread body (30) as a pull and a fixing portion (20) for fixing molded resin body (25) formed by insert-molding synthetic resin on the upper wing (2) are formed integrally with the slider body (1). The thread attachment portion (10) is formed by arranging tongue pieces (11) each having a narrowed tip in the center of the upper wing (2) such that they oppose each other. The thread body (30) is placed between the tongue pieces (11) and the tongue pieces (11) are crimped so as to fix the thread body (30). Further, tongue pieces (11) slightly smaller than the aforementioned tongue pieces (11) having the same shape are formed back and forth of the thread attachment portion (10) and the tips thereof are crimped inward so as to form the fixing portion (20). Then, synthetic resin is insert-molded to bury and cover the thread attachment portion (10) to which the thread body (30) is already attached and the fixing portion (20) so that a molded resin body (25) is formed on the upper wing (2) and fixed thereon. As a result, there is provided a slider whose body (1) has a smooth surface and only contains a flexible thread body (30).