Popular Special Dies (Inches)

WESTport's Popular Special Dies – Inches provide manufacturers with a fast, dependable solution for producing precision external inch threads when standard catalog tooling is unavailable or does not meet application requirements. Designed for machine shops, OEMs, maintenance departments, repair facilities, and production manufacturers, these dies include many of the industry's most commonly requested non-standard inch thread sizes and pitches while offering the flexibility of complete custom manufacturing. WESTport maintains one of the largest inventories of tap and die blanks in the industry, allowing exceptionally fast turnaround on custom specials manufactured directly from your blueprint or sample.

Every WESTport Popular Special Inch Die is precision manufactured using premium High-Speed Steel (HSS) and other high-performance tool steels selected for excellent wear resistance, dimensional stability, and long service life. Precision grinding produces accurate thread geometry, sharp cutting edges, and smooth finishes that consistently generate high-quality external threads. Whether your application requires Unified National threads (UNC, UNF, UNEF), special inch pitches, oversized or undersized thread tolerances, left-hand threads, or another custom configuration, WESTport can manufacture tooling to your exact specifications.

External inch threads continue to be widely used throughout North American manufacturing in machinery, industrial equipment, aerospace, automotive, defense, hydraulic systems, agricultural equipment, and countless OEM applications. Reliable threading tools are essential for maintaining production schedules, minimizing scrap, and ensuring proper thread fit. WESTport's Popular Special Inch Dies help manufacturers reduce costly downtime by providing rapid delivery on many commonly requested special sizes while offering the engineering expertise to manufacture virtually any custom thread configuration.

Whether producing threaded shafts, studs, bolts, fittings, adapters, fasteners, or custom-engineered components, WESTport works directly with customers to provide tooling optimized for their materials, machining methods, and production volumes. From one-piece prototypes to high-volume production orders, every die is manufactured to deliver exceptional accuracy, repeatability, and durability.

Since 1989, WESTport has supplied manufacturers throughout North America and around the world with precision thread gages, custom taps and dies, hardness testing equipment, metrology products, and ISO/IEC 17025 calibration services. Our commitment to quality, responsive customer service, and engineering expertise has made WESTport a trusted source for precision thread-cutting solutions for more than 35 years.

Benefits

• Produces accurate, repeatable external inch threads
• Rapid delivery for many popular special sizes
• Minimizes production downtime
• Excellent dimensional consistency
• Long tool life in demanding machining environments
• Custom-engineered for unique applications
• Supports prototype and production manufacturing
• Reliable performance across a wide range of materials

Typical Applications

• External thread cutting
• Thread repair and restoration
• Aerospace manufacturing
• Automotive components
• Hydraulic fittings
• Industrial machinery
• Fastener manufacturing
• Heavy equipment
• Precision machine shops
• OEM production

Technical Information

WESTport Popular Special Inch Dies are manufactured for many of the industry's most frequently requested non-standard inch thread sizes and pitches. When a standard die is unavailable, WESTport can manufacture custom tooling directly from your blueprint or sample. Custom outside diameters, thread classes, special pitches, modified geometries, and premium coatings are available to satisfy virtually any threading requirement while maintaining exceptional thread accuracy, repeatability, and long service life.

Why Choose WESTport?

For more than 35 years, WESTport has been a trusted supplier of precision thread gages, custom taps and dies, metrology equipment, hardness testing products, and ISO/IEC 17025 calibration services. Our extensive inventory, precision manufacturing capabilities, and engineering expertise allow us to deliver custom thread-cutting solutions with fast turnaround, exceptional quality, and responsive customer support. Whether you require a single replacement die or a large production order, WESTport delivers the precision and reliability manufacturers have trusted since 1989.