Task: Translation
Input (Spanish): The jaw assembly includes interior teeth designed to bite into the projecting ribs or deformations on the outside of the bar ends which form the overall diameter of the bar but not the core or nominal diameter of the bar.
Output (English): El ensamble de sujecion incluye dientes interiores disenados para morder las costillas salientes o formaciones en la parte exterior de los extremos de barra que forman el diametro total de la barra pero no el centro o diametro nominal de la barra.