A washer arranging apparatus comprising: a washer arranging portion that has a substantially ring-shaped shape and is a portion for positioning a plurality of washers in predetermined arranging positions; and a washer supplying portion that is a portion for supplying the plurality of washers to the washer arranging portion and that is arranged inside the washer arranging portion, wherein the washer supplying portion includes a holding portion that has a horizontal floor portion and is a portion for holding the plurality of washers loaded into the washer supplying portion, and a vane member that rotates above the floor portion (21 a) about an axis of the washer arranging portion and pushes the washers held in the holding portion in a direction parallel to the floor portion (21 a), characterized in that the holding portion is formed by i) a substantially truncated cone-shaped base portion that has a bottom surface portion (21 a) that forms a bottom portion and is a substantially circular horizontal surface formed in a position higher than the washer arranging portion, and an inclined surface that forms an inclined portion that is inclined downward toward an outside in a radial direction with respect to a horizontal direction, on an outer peripheral edge portion of the bottom surface portion (21 a), and ii) a cylindrical portion that is a substantially cylindrical portion arranged with an axial center thereof aligned with a rotational axis of the vane member, and is integrally formed with the vane member; and a washer discharge port that is an open portion for discharging the washers is formed in an end portion of the cylindrical portion on a side of the cylindrical portion opposite the bottom surface portion. a washer arranging portion that has a substantially ring-shaped shape and is a portion for positioning a plurality of washers in predetermined arranging positions; and a washer supplying portion that is a portion for supplying the plurality of washers to the washer arranging portion and that is arranged inside the washer arranging portion, wherein the washer supplying portion includes a holding portion that has a horizontal floor portion and is a portion for holding the plurality of washers loaded into the washer supplying portion, and a vane member that rotates above the floor portion (21 a) about an axis of the washer arranging portion and pushes the washers held in the holding portion in a direction parallel to the floor portion (21 a), characterized in that the holding portion is formed by i) a substantially truncated cone-shaped base portion that has a bottom surface portion (21 a) that forms a bottom portion and is a substantially circular horizontal surface formed in a position higher than the washer arranging portion, and an inclined surface that forms an inclined portion that is inclined downward toward an outside in a radial direction with respect to a horizontal direction, on an outer peripheral edge portion of the bottom surface portion (21 a), and ii) a cylindrical portion that is a substantially cylindrical portion arranged with an axial center thereof aligned with a rotational axis of the vane member, and is integrally formed with the vane member; and a washer discharge port that is an open portion for discharging the washers is formed in an end portion of the cylindrical portion on a side of the cylindrical portion opposite the bottom surface portion.