29 / | HD | METAL WORKING |
592 | DF | METHOD OF MECHANICAL MANUFACTURE {54} |
895 | DF | .~ Roller making {4} |
895.2 | DF | .~.~ Assembling preformed components {3} |
895.21 | DF | .~.~.~ Work contacting surface element assembled to core {3} |
895.213 | .~.~.~.~ Work contacting surface having annular axial sections |