Thread cutting; Automatic machines specially designed therefor

Child Classifications

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• B23G 1/02 on an external or internal cylindrical or conical surface, e.g. on recesses (B23G1/16, B23G1/22, B23G1/32, B23G1/36 take precedence)
• B23G 1/16 in holes of workpieces by taps (B23G1/26, B23G1/32, B23G1/36 take precedence)
• B23G 1/22 Machines specially designed for operating on pipes or tubes
• B23G 1/26 Manually-operated thread-cutting devices (features of the threading tool per se B23G5/00)
• B23G 1/32 by milling
• B23G 1/36 by grinding
• B23G 1/42 Centreless grinding
• B23G 1/44 Equipment or accessories specially designed for machines or devices for thread cutting