Linchpin and method for its production

Ein Klappstecker hat einen Schaft (1), an welchem in zwei gegeneinander versetzten Löchern (5, 6) ein Federbügel (8) schwenkbar gelagert ist, dessen Mittenbereich (7) elastisch gegen den Schaft (1) gedrückt wird. Die Lochwände (14) für die Löcher (5, 6) zur Aufnahme des Federbügels (8) erweitern sich in Richtung zur Einstecköffnung (15, 16) für den Federbügel (8) um die Reibung zwischen den Federbügelenden und der Lochwand zu verringern. Die Lochwände (14) sind zur Verbilligung der Herstellung spanlos geformt. 1. Linch pin which has a shaft (1) and a spring clip (8) which is pivotably mounted in the head (3) of said shaft, for mounting which there are provided, in the shaft head, two apertures (5, 6) with a closed circumference, the axes of the aperture being offset with respect to each other in the direction of the shaft axis and transverse thereto, so that the centre area (7) of the spring clip (8) is pressed resiliently against the shaft, with possibly a third aperture (13) provided in the shaft head (3) for receiving a safety chain, and where at least the aperture walls (14) for the apertures (5, 6) for receiving the spring clip (8) widen in the direction of the insertion aperture (15, 16) for the spring clip (8) and these aperture walls (14) are shaped without cutting, characterised in that at least one of the apertures (5, 6) for receiving the spring clip (8) is a blind hole and in that at the bottom of this blind hole there is provided a projection (21), e.g. a point or a bulge projecting in the direction of the aperture edge.