Abstract: A self-indicating lug nut for use with an automobile wheel stud having an outermost first external thread. The lug nut includes a nut body having an internally threaded bore including a plurality of internal threads, an outermost last internal thread, and an outer end. The lug nut further includes an indicating member removably attached to the nut body proximate to the outer end. The lug nut is configured such that when the lug nut is threadibly advanced onto the wheel stud, interfering contact between the first external thread and the indicating member displaces the indicating member from the nut body. The indicating member can separate into two or more pieces when displaced from the nut body. Displacement of the indicating member provides a visible indication that all of the internal threads of the nut body have engaged the external threads of the wheel stud.