A 6mm x 1 HSS dienut is a round external threading die designed to cut or repair M6 metric threads with a 1.0 mm pitch. Its primary use is to form or restore external threads on rods, studs and shafts by hand in a die stock or in a compatible machine die holder, making it suitable for both maintenance work and production environments where metric threads are required.

This dienut is manufactured from M2 high speed steel (HSS) and is supplied with a bright ground finish to ensure accurate cutting geometry and long wear life. The thread form produced conforms to the ISO metric profile (reference ISO 724) and aligns with common national standards for metric threads (DIN 13 / BS 3643). The tool is intended for standard M6 x 1.0 threads and is compatible with conventional round die stocks and die heads; no dedicated drive head or special shank is required for hand or light machine use.

Typical applications include engineering maintenance, machinery repair, automotive and motorbike restoration, metal fabrication and plumbing where external metric threads need to be formed or reinstated. The HSS material and ground finish make the dienut effective on mild and medium carbon steels, aluminium, brass and other non-ferrous materials. Stainless steels and hardened alloys can be threaded with HSS dies but require reduced cutting speed, heavy cutting fluid and incremental passes to avoid rapid wear.

Key benefits of an M2 HSS dienut are its elevated hot hardness and wear resistance compared with carbon tool steels, producing consistent thread form over a longer life. The bright ground finish provides dimensional accuracy and some resistance to corrosion; users should apply cutting fluid and store the die dry to maximise life. The tool is compatible with standard die stocks and thread gauges, permitting straightforward integration into existing tooling sets.

Duchy Fasteners stocks this 6mm x 1 HSS dienut in single pieces and in multi-packs, and carries a broader range of metric dies from M3 up to M12 to cover common thread sizes. Contact us for availability and pack options.