Solid Circular Threading Die Whitworth W 1" (BSW) HSS, DORMER

This professional solid circular threading die by the world-leading manufacturer DORMER is an ultra-premium industrial-grade tool engineered specifically for cutting and restoring British Standard Whitworth (BSW / W) external inch threads. Crafted from high-performance High-Speed Steel (HSS), this die delivers outstanding structural hardness, superb torsional resistance, and exceptional edge retention, preventing thread tearing and guaranteeing flawless thread calibration even under demanding heavy-duty workshop conditions.

Featuring a nominal thread size of W 1" with 8 threads per inch (TPI), this precision die strictly conforms to the classic Whitworth thread. It is highly optimized for heavy industrial engineering, structural machinery maintenance, legacy agricultural equipment, marine applications, and heritage vehicle restoration. DORMER's rigorous manufacturing standards and advanced cutting geometry guarantee absolute geometric accuracy, ensuring clean, chip-free, and effortless execution on carbon steels, alloy steels, ferrous materials, and non-ferrous metals.

Features:

• Tool Type: Solid Circular Threading Die

• Thread Specification: British Standard Whitworth (BSW / Marked as W)

• Thread Size: W 1" (Nominal Diameter: ~25.40 mm | Pitch: 8 TPI)

• Material: High-Grade HSS (High-Speed Steel) for maximum wear resistance and extended service life

• Application: Ideal for cutting new threads or restoring damaged heavy fasteners, shafts, and bolts in industrial mechanical assemblies

• Universal Fit: Compatible with standard hand die stocks or machine tool attachments

• Manufacturer: DORMER (Premium Global Tooling)