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Description
RIDGID 1/4″ – 3/8″ NPT RH Universal dies are professional-grade threading components designed for high-precision pipe threading in machine die heads. These dies are standard for creating American National Standard Taper Pipe Threads (NPT) on small-diameter pipes.
Key Specifications
- Thread Type: NPT (National Pipe Taper) with 18 TPI (Threads Per Inch).
- Capacity: Designed for 1/4″ and 3/8″ nominal pipe sizes.
- Direction: Right-Hand (RH) threading.
- Quantity: Typically sold as a set of 4 dies.
Material Options and Catalog Numbers
Depending on the material being threaded, RIDGID offers these dies in different metal compositions:
- Alloy RH (Catalog #47740): Best for threading black steel, galvanized steel, and softer materials.
- High-Speed RH (Catalog #47760): Provides longer tool life and is suitable for a wider variety of tough materials.
- High-Speed for Stainless Steel (Catalog #47780): Specifically formulated to cut clean threads in stainless steel without excessive wear or “chattering”.
Compatibility
These “Universal” dies are designed to fit a wide range of RIDGID machine die heads, including:
- Die Head Models: 504A, 711, 713, 811A, 815A, 816, 817, and 842.
- Threading Machines: Compatible with RIDGID 300, 535, 1215, 1224, and 1822 series threading machines.
User Performance & Reliability
According to professional reviewers on milanoceramiche.it, RIDGID dies are favored for their ability to deliver clean, precise threads without tearing, especially in high-volume shop environments. Users on ridgid.eu emphasize that using high-quality thread cutting oil is essential to maximize the lifespan of the teeth and ensure smooth operation.
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