This standard establishes a series of external diameter dimensions c/02, a series of holes as well as certain internal dimensions and their general tolerances, for the blank cores of drawing dies. This standard provides blank cores with cylindrical holes intended to be used for application groups A to F defined in UNI ISO 1684.
UNI ISO 2804:1977 history
1977UNI ISO 2804:1977 Wire. Drawing templates for rods and tubes. Unprocessed sintered metal carbonized core. size