This product is an M20 x 1.5 hexagonal die nut (right‑hand), a hand‑held external thread cutter designed to form or restore ISO metric fine‑pitch external threads on round bar or studs. It is principally used where a compact, wrench‑operated die is required for on‑site thread cutting, thread repair and maintenance tasks.

The die nut is manufactured from high‑speed steel (HSS M2 grade), hardened and ground to provide durable cutting edges and long tool life. The body is supplied with a black oxide finish to reduce corrosion and friction during cutting. The thread form produced conforms to ISO metric thread standards (ISO 261/ISO 965) and is compatible with DIN 13 and BS 3643 metric profiles when used with the correct stock diameter and tooling. This is a right‑hand thread die producing an M20 nominal diameter with a 1.5 mm fine pitch. The external shape is hexagonal to accept a standard spanner or die stock/holder for controlled manual turning; cutting flutes and a chamfered lead facilitate chip evacuation and easy start‑up into the workpiece.

Typical applications include maintenance and repair in engineering workshops, fabrication and plant maintenance, automotive and rail refitting, and general mechanical assembly where fine‑pitch threads are required. It is suitable for cutting threads in mild and medium carbon steels, brass, aluminium alloys and many stainless steels when appropriate cutting lubricant and correct technique are used.

Key benefits include the superior wear resistance of M2 HSS compared with carbon steel dies, the corrosion resistance afforded by the black oxide finish, and the convenience of a hexagon body for simple wrench operation or use in a die holder. The fine 1.5 mm pitch provides greater adjustment precision and better load distribution in assemblies than coarse threads where space or vibration considerations demand it. The die nut is compatible with standard metric thread gauges and customary tolerance classes when operated on correctly sized rod (nominal Ø20 mm) and with suitable lubrication.

Duchy Fasteners stocks a wide range of HSS dies and die nuts across metric sizes and pitches. This M20 x 1.5 hex die nut is available singly and in trade packs; please contact us for specific size availability and pack quantities.