Rex NPT Threading Die Set, 2 1/2–4 Inch, HSS, Made in Japan - 16C360

NPT Threading Die Set (2.5"–4")

Engineered specifically for high-volume, large-scale pipeline projects, the REX 16C360 Threading Die Set delivers unmatched cutting performance for massive 2 1/2" to 4" pipe diameters. Manufactured in Japan from ultra-durable High-Speed Steel (HSS), this professional-grade set is purpose-built to execute pristine, leak-proof threads adhering to the National Pipe Thread (NPT) standard. Featuring a specialized 60-degree thread angle and an aggressive 8 TPI pitch, these heavy-duty dies expertly handle highly demanding materials like heavy-schedule carbon and stainless steel. Optimized for robust threading machines such as the REX N100A and 150A, the dies feature a 20 mm width and weigh approximately 700g, ensuring maximum cutting alignment and structural stability to completely prevent cross-threading on large workpieces.

Beyond raw cutting power, this tool excels in modern operational efficiency. It is uniquely compatible with REX’s original profiling die heads (such as the 293040), enabling highly accurate straight tapers with remarkably lower power consumption and accelerated cutting speeds. Furthermore, the innovative design incorporates distinct precision notches that click securely into position against spring-loaded balls within the die head. This allows industrial contractors to perform quick, tool-free blade replacements without ever removing the head from the machine, drastically reducing setup time in fast-paced oil, gas, and commercial plumbing environments.

Key Features & Benefits:

• Optimized for Large Pipes: Specially calibrated to provide a stable, chatter-free cutting action on massive large-diameter workpieces ranging from 2 1/2" up to 4".
• Precision NPT Threading: Features an aggressive 8 TPI (Threads Per Inch) pitch and a 60-degree thread angle, ensuring strict compliance with NPT standards for airtight fluid and gas connections.
• Superior HSS Durability: Manufactured from high-quality hardened and tempered High-Speed Steel (HSS) to ensure an extremely long service life, even under heavy, continuous industrial use.
• Profiling System Compatibility: Specifically optimized for use with REX’s original profiling die heads, enabling accurate straight tapers with significantly lower machine power consumption and higher cutting speeds.
• Easy Tool-Free Installation: Intelligently designed with distinct notches that click perfectly into position against spring-loaded balls in the die head, allowing for fast replacement without removing the head from the machine.
• Robust Cutting Build: The 20 mm width provides a strong, stable cutting surface that strictly maintains alignment throughout the threading process, eliminating the risk of cross-threading.
• Stainless Steel Ready: The premium HSS composition makes these dies the ultimate choice for threading stainless steel and high-tensile piping that would otherwise rapidly dull standard alloy blades.
• Precise Milled Geometry: The teeth are milled using a high-precision manufacturing process to vastly improve the surface finish and ensure a clean, stable "bite" from the very first rotation.
• Heavy-Duty Industrial Application: The trusted standard choice for demanding commercial sectors, including major plumbing infrastructure, oil & gas lines, and large-scale pipeline installation works.
• Authentic Made in Japan: Produced under the strictest quality control standards in Japan, ensuring consistent mechanical performance and long-term reliability for top-tier contractors.