THREAD CUTTING

**Definition:** This place covers:

Thread cutting by chip removal.

Production of threads with no removal of chips by means of tools similar in form and manner of use to thread cutting tools.

Working of screws, bolt heads and nuts in conjunction with thread cutting.

For further details of the interpretation of these terms, please refer to the notes under the relevant main group heading.

**Limiting references (this place does not cover):** - Thread forming by corrugating tubes -> B21D15/04 - Making screwthreads by rolling -> B21H3/00 - Making threaded elements by forging/hammering -> B21K1/26 - Making nuts by forging or hammering -> B21K1/64 - Turning helical grooves -> B23B5/48 - Turning tools for threading -> B23B27/065 - Milling helical grooves -> B23C3/32 - Making gears (inc wormwheels) -> B23F - Making milling cutters for threading -> B23P15/36 - Making threading tools -> B23P15/48 - Multi stage processes involving threading and also other operations classed in B23B , B23C , B23D , B23F , making particular items -> B23P23/00 - Details of machine tools and accessories not related to the operation being performed including: -> B23Q - - tool changing -> B23Q3/155 - - conveying workpiece into and from machine -> B23Q7/00 - - evacuation of swarf, -> B23Q11/0042 - - guarding & protective coverings -> B23Q11/08 - Adaptive control and/or computer controls for turning, boring or drilling processes -> B23Q15/00 , G05B15/02 - - measuring or sensing -> B23Q17/00 - Grinding helicoidal grooves -> B24B19/022 - Fasteners per se -> F16B