This product is a 10 mm x 1.5 HSS dienut — a split, adjustable external thread die in high-speed steel intended for cutting or repairing M10 x 1.5 ISO metric external threads. Its primary use is to restore damaged threads, cut fresh external threads on rods and studs, or fine-tune thread fit where a compact, hand-held die is required.

The dienut is manufactured from M2 high-speed steel (HSS M2) and is supplied in a bright ground condition to produce clean, accurate thread flanks. It is manufactured to cut ISO metric threads (M10 x 1.5) compatible with ISO 261 / ISO 68-1 thread form and is suitable for use where BS 3643 and DIN 13 metric thread standards apply. The split (adjustable) design allows slight tightening or opening in a compatible die holder to adjust the thread fit. The dienut is used with a standard die stock or die holder rather than a screw-head drive, and its external profile suits common hand-held die spanners.

Typical applications include general engineering workshops, maintenance and repair operations, automotive and agricultural machinery repair, fabrication shops and plant maintenance where on-site thread repair or short-run thread cutting is required. The HSS construction makes this dienut suitable for machining mild and medium steels, non-ferrous metals and some stainless steels when used with appropriate cutting fluid and correct technique.

Key benefits include the wear resistance and heat-softening resistance of M2 HSS for a long tool life compared with carbon steel dies, the ability to re-sharpen or re-ground if required, and the adjustable split design which permits control over thread tolerance for a snug or free fit. Where black oxide coated dienuts are preferred for improved corrosion resistance and reduced galling, Duchy Fasteners can advise on available finishes. The M10 x 1.5 dienut is compatible with standard metric thread gauges and die holders, making it straightforward to replace or integrate into existing tooling sets.

Duchy Fasteners stocks an extensive range of HSS dienuts and dies in metric and imperial sizes—typically from small diameters up to M20 and in multi-packs or single-piece supply. Contact us for specific size availability, finishes and die-holder compatibility.