Abstract: The present invention provides an engaging member which enables a male member and a female member to be engaged with each other easily by sliding them relatively along the longitudinal direction and having a high engaging force, and a manufacturing method thereof. This engaging member includes the male member to be attached on one of components to be connected with each other and the female member to be attached on the other of the components. Engaging projecting portion with which the female member engages is provided on a side edge in the longitudinal direction of the male member. The female member includes an accommodating portion formed along the longitudinal direction so as to accommodate the male member. Hook-shaped portions with which the engaging projecting portion of the male member engages are formed along the longitudinal direction inside the accommodating portion.

Abstract: A fastening body having a flat substrate made of synthetic resin. The flat substrate has two synthetic resin layers having different molding shrinkage rates. With the two synthetic resin layers, the flat substrate can have a desired curvature in width direction. The fastening body is fixed by engagement in each of engaging groove portions of a mounting body. The mounting body has a substantially U-shaped section, formed along both side edges in a width direction, so that openings formed by the U-shaped section oppose each other.