This product is an M11 x 1.5 right-hand split die, a hand and machine threading tool used to cut or restore external metric threads with an 11 mm nominal diameter and a 1.5 mm pitch. The split design allows a small axial adjustment of the cutting diameter by tightening or loosening the split screw, making it suitable for cleaning damaged threads or producing accurate external threads on bar stock and studs.

The die is manufactured from M2 high speed steel (HSS), offering good hot hardness and wear resistance compared with carbon tool steels. It is supplied with a precision ground cutting face and a bright finish; variants with a black oxide coating are often available to provide additional corrosion resistance and reduced light reflection during use. The thread form conforms to common metric standards (ISO 261 general-purpose metric thread form and ISO 965-1 for tolerance classes) and is compatible with DIN 13 thread profiles for metric coarse threads. This is a right-hand (RH) thread die suitable for standard M11 × 1.5 threads.

Typical applications include maintenance and repair of machinery, automotive stud and bolt restoration, fabrication of bespoke fasteners, and on-site threading in engineering workshops. Industries that commonly use M11 × 1.5 split dies include plant maintenance, rail and transport workshops, mechanical engineering, and general metal fabrication where non-standard or worn fasteners need renewing without replacing the parent component.

Key benefits of the HSS split die include sustained cutting performance at elevated temperatures, long tool life on common engineering materials (steel, stainless steel in lighter sections, brass, aluminium), and the ability to fine-tune thread fit via the split adjustment. The die is compatible with standard round die stocks / holders and can be used with light machine equipment where appropriate. For best results use appropriate cutting lubricant and advance the die with controlled pressure to preserve thread form and tool life.

Duchy Fasteners stocks a comprehensive range of hand and machine dies. This M11 × 1.5 split die is available as a single item and we hold a broad selection of metric sizes for repair and production work; please contact us for pack sizes and availability.