An interengaging fastener member having a base with a flexibility for conforming to the curved objective surface, without damaging a function for supporting headed stems. A fastener member 10 is provided with a base 12 and a plurality of headed stems 14 arranged on the base 12. The headed stem 14 has a stem 16 projecting substantially upright from the base 12, and a head 18 connected to the end of the stem 16. The base 12 includes a plate layer 26 having a first major surface 20, and a fabric layer 30 bonded to a surface opposite to the first major surface 20. The plate layer 26 is connected to proximal ends 22 of the stems 16 of the headed stems 14 by integral molding process. The plate layer 26 and the fabric layer 30 are bonded together in an injection molding process for the plate layer 26. Because the fabric layer 30 assists a function of the base 26 for supporting headed stems, it is possible to provide the base 12 with a flexibility for conforming to a curved objective surface, by making the plate layer 26 relatively thin.