GOST 13039-1983 Arbor screws for fixing end cutters. Basic dimensions
GOST 26538-1985 history
2014GOST 32832.3-2014 Arbors with 7:24 taper for shell cutters for automatic tool changers. Part 3. Dimensions and symbol
1985GOST 26538-1985 7:24 tapered arbours for shell-type face milling cutters for machines with numerical control. Basic dimensions
GOST 26538-1985 7:24 tapered arbours for shell-type face milling cutters for machines with numerical control. Basic dimensions was changed to GOST 32832.3-2014 Arbors with 7:24 taper for shell cutters for automatic tool changers. Part 3. Dimensions and symbol.