Patent ID: 7320571

Claim:
A device to be attached to a threaded stud, comprising a body having a bore for insertion of a stud, wherein the device has only a single pawl, and, in the absence of a stud in the bore, the pawl extends from an inner wall of the bore in a direction substantially perpendicular to a longitudinal axis of the bore, wherein the pawl has a flexible thin section connected to the inner wall and a thick section extending from the thin section, wherein the pawl can be bent in opposite directions at the thin section for mounting the device on a stud from two directions, wherein the pawl has only a single pair of thread engaging sections thereon, said pair being formed at opposite sides of the thick section at a tip end of the thick section, one or another of the engaging sections being disposed for entering a space between crests of threads of a stud depending on a direction of insertion of the stud in the bore, wherein the pawl has only a single pair of grooves thereon, said grooves being formed adjacent to corresponding engaging sections of the pawl at the opposite sides of the thick section, each groove being disposed for receiving a crest of a thread adjacent to the space between crests, and wherein the opposite sides of the thick section of the pawl extending continuously from the grooves to the thin section are devoid of thread engaging sections and grooves corresponding to thread engaging sections.