The fastener of the present invention comprises a male material, having many hooks, of a mechanical fastener and a female material, made of nonwoven fabric, of the mechanical fastener, the male material engaging said female material, wherein many hooks (3) in the male material (1) have a density of 100 to 1000 pieces/cm<2>, a height of 300 to 1500 mu m and a width of 100 to 500 mu m, and the nonwoven fabric composing the female material has a basis weight of 20 to 80 g/m<2> and a fineness, of 4 to 15 deniers, of a composite fiber thereof. The fastener of is used, for example, in a disposable diaper of absorbent articles.
