Pawl nut with securing element

A pawl nut (10) having a securing element (18) as an axial securing mechanism for a topper element (12) of a shaft (14), the pawl nut (10) being screwed on a thread-shaft section (16) of the shaft (14) in a tightening direction (D1) in order to axially brace the topper element (12) on the shaft (14) along a screwing axis (S) in the mounted state, the securing element (18) having an engagement section (22) which engages in a recess (24) of the shaft (14) and holds the pawl nut (10) along a loosening direction (D2) in the mounted state, wherein the pawl nut (10) mounts the securing element (18) along the screwing axis (S), the pawl nut (10) being twisted in one direction along the tightening direction (D1) in relation to the securing element (18), the pawl nut (10) together with securing the element (18) forming pawl indentations (20a, 20b), which mutually engage along the loosening direction (D2), in the radial direction and the securing element (18) being inserted in the pawl nut (10) and its pawl indentations (20a) along the screwing axis (S), wherein

• the securing element (18) is formed as a securing ring which is open in the circumferential direction and is elastically deformable in such manner in one direction along the tightening direction (D1) that the pawl nut (10) is rotatable along the tightening direction (D1) in relation to the securing element (18).