Patent ID: 7832971

Claim:
A threaded element ( 1 ) comprising at least two slots, notches, or grooves ( 3 ) intersecting a thread thereof, the slots, notches, or grooves ( 3 ) are provided with a shape in reference to the thread such that when intersecting the thread, a blocking edge (Ks) is formed at a thread flank ( 4 ), on a first side of the slots, notches or grooves, and a gliding surface (Ag), opposite the blocking edge (Ks), on a second side of the slots notches or groove, the gliding surface (Ag) transitions from the thread flank ( 4 ) at an obtuse angle (W), and the blocking edge (Ks) intersects the thread flank ( 4 ) generally perpendicularly, the blocking edge (Ks) adapted to engage a work piece ( 6 ) thereby securing against reverse rotation, the slots notches or grooves have no more than 25-times a pitch of the thread and have the same rotational direction.