Provided is a small-sized torque fluctuation absorbing apparatus. The small-sized torque fluctuation absorbing apparatus is provided with a vibration absorbing part (A). The apparatus includes: a vibration absorbing pat (A) enables multiple spiral springs (6) to be coupled in series, and absorbs torque fluctuations. The torque fluctuation absorbing apparatus also comprises a pair of disk plates (3, 4) coupled to an input shaft (S) of a gearbox, and disposed to be spatially separated from one another in an axial direction; a hub member (2) including a boss section (2a) coupled to the output side rotating member, and a flange section (2b) provided on the boss section and disposed between the outer contour plates; and a disk intermediate plate (5) disposed between the flange section and the outer contour plates and coupled between the spiral springs. With the position where the disk plate is located in the axial direction as the reference, the position of the flange part of the hub part is ascertained. With the position where the disk plate is located in the axial direction as the reference, the position of the intermediate plate is ascertained.