1/2"x28 NS 1-1/2" OD HSS Die

HSS Imperial NS (National Special) Dies are specialised threading tools used for cutting, repairing, and restoring external imperial threads that use non‑standard or fine‑pitch configurations. Manufactured from high‑speed steel, these dies provide excellent hardness, long‑term durability, and clean cutting performance across a wide range of workshop and industrial applications. NS thread dies are commonly used in precision assemblies, older machinery, specialist equipment, firearms, and custom mechanical builds where uncommon imperial thread pitches are required. Their precision‑ground cutting edges ensure smooth chip evacuation and accurate thread reproduction, making them ideal for restoring damaged fasteners, creating new threads, and ensuring reliable, secure thread engagement. These dies are compatible with standard die stocks and are available in a variety of outside diameters to suit different holders and cutting environments, making them a dependable choice for technicians, mechanics, fabricators, and restoration specialists.