NUT AND ROTARY MACHINE

摘要

Provided is a nut (12) which is screwed onto an end on a first side of each of a plurality of bolts (11) that penetrate a plurality of rotary members in axial direction at a plurality of positions in a circumferential direction around an axis (A), the plurality of rotary members being stacked in the axial direction in which the axis (A) extends. Out of surfaces of the nut, at least a first cover surface (35) that is a surface on the reverse side of a surface facing a second side that is the opposite side to the first side of the bolt (11) has a shape that forms an annular surface continuous around the axis (A) with the first cover surfaces (35) of other nuts (12).