This is a 16 mm x 2 (1 1/2) right‑hand split die manufactured from M2 high‑speed steel (HSS) for cutting or repairing external metric threads. The primary use is to form or restore M16 × 2.0 (ISO metric) threads on shafts, studs and bar stock, either by hand using a die stock or in light machine applications where a controlled, adjustable cut is required.

The die conforms to the ISO metric thread form (ISO 68‑1) and the preferred metric sizes described in ISO 261/BS 3643; it is compatible with the tolerances and fits commonly specified under ISO 965 and DIN 13. Material grade M2 HSS provides superior hardness and wear resistance versus carbon tool steels, and the die is supplied with a bright ground finish for sharp cutting edges and accurate thread geometry. As a round, split type die the component features a longitudinal slit that allows the cutting diameter to be slightly adjusted via the die holder clamping screw, improving fit for repair work or compensating for tool wear. The product is a right‑hand thread; drive is by standard round die stock (die holder) rather than a spanner or power drive, and it is suitable for manual or light powered use as advised by the holder manufacturer.

Typical applications include maintenance and repair in automotive, agricultural machinery, plant engineering, fabrication and general engineering workshops where metric M16 threads are required. The split die is particularly useful for re‑threading damaged shafts, producing threads on turned components and making minor size corrections without changing chamfers or mating parts.

Key benefits are the long tool life and edge retention of M2 HSS (strength grade and wear resistance), the adjustability and chip clearance afforded by the split design, and broad compatibility with standard die stocks and ISO metric fasteners. Note that plain HSS is not stainless; for enhanced corrosion resistance consider dies with black oxide or TiN coatings or store the tool dry and lightly oiled.

Duchy Fasteners stocks a wide range of metric split dies and die holders across common sizes; items are available individually or in multi‑pack options—please contact us for size availability and pack quantities.