THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS OR NUTS, IN CONJUNCTION THEREWITH

Introduced: September 1968

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Subclass:: THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS OR NUTS, IN CONJUNCTION THEREWITH

Description

This subclass encompasses machines, tools, and processes for cutting external and internal threads on workpieces, as well as forming, shaping, and finishing operations on screws, bolts, bolt heads, and nuts during or following thread production. Covered technologies include thread-cutting machines (lathes, threading machines, tapping machines), cutting tools (thread dies, taps, cutting inserts), and automated systems for complete screw and fastener manufacturing. The classification also includes associated operations such as head forming, slot cutting, chamfering, and deburring when performed as integral steps in screw or bolt production.

Related Keywords

cutting screw threads by GRINDINGmaking NUT(S)TAPPING metal or other material [= screw-threading]THREADING metal

6 direct subcodes

Child Classifications

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B23G 1/00 Thread cutting; Automatic machines specially designed therefor
B23G 11/00 Feeding or discharging mechanisms combined with, or arranged in, or specially adapted for use in connection with, thread-cutting machines
B23G 3/00 Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working-spindle
B23G 5/00 Thread-cutting tools; Die-heads
B23G 7/00 Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
B23G 9/00 Working screws, bolt heads or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw thread