Abstract: A friction pad assembly for a disk brake, includes: a plurality of lining assemblies; a torque receiving plate which is fixed to a guide plate in which a constituent component accommodation space is formed; first and second link plates which are arranged to bridge over the plurality of lining assemblies; and fastening portions which are provided across the guide plate and the torque receiving plate, and which are disposed at least at each apex position of a triangle that surrounds a center of gravity of the lining assembly.