CADWorx 2010 has a catalog of DIN data files located at:

..\CADWorx 2010\Plant\LIB_MM\DND

..\CADWorx 2010\Plant\LIB_MM\DNE

..\CADWorx 2010\Plant\LIB_MM\END

..\CADWorx 2010\Plant\LIB_MM\ENE