DIFF Subgroup Additional Only
B23B 2231/2027 Gripping surfaces, i.e. the surface contacting the tool or workpiece
Full Title
Details of chucks, toolholder shanks or tool shanks > Collet chucks > Gripping surfaces, i.e. the surface contacting the tool or workpiece
Of 7 combined children, 0 exist in both systems.
7 codes are CPC-only extensions.
Note: 7 CPC extensions are marked as secondary classification only.