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Ridgid 47780 pipe die set, four high speed steel dies for 18 NPT right hand threads

Ridgid

Ridgid 47780 1/4-3/8 18 NPT Pipe Die Stainless Steel

SKU CH-R9AJ-FFDDG

High-speed steel pipe die cuts 18 TPI NPT right-hand threads in 1/4 to 3/8 inch stainless steel for Ridgid 1215, 1224, 300 and 535 threaders

  • Product typeDies & Taps
  • Threads 18 TPI for standard NPT pipe connections
  • High-speed steel dies cut stainless steel pipe cleanly
  • Four-die set produces consistent right-hand threads
  • Fits Ridgid 1215 1224 300 535 threading machines
  • Universal die head compatibility simplifies tool changes

Ridgid 47780 NPT Pipe Die for Stainless Steel

This Ridgid 47780 die cuts right-hand NPT threads on 1/4 to 3/8 inch stainless steel pipe. It fits Ridgid universal die heads used with 1215, 1224, 300 and 535 threading machines. The four-piece high-speed steel set is built for pipe threading applications.

Installation matches Ridgid universal die heads

The die seats directly into compatible Ridgid universal die heads on 1215, 1224, 300 or 535 machines. No adapters are required for these models. Using the die with other threader series or non-Ridgid heads will not work and can damage the tooling.

18 threads per inch NPT right-hand thread

The die produces an 18 TPI National Pipe Taper thread in a right-hand direction. This pitch and thread form are fixed; the die cannot cut other TPI values, left-hand threads or different thread standards such as BSPT. Verify the required thread spec before purchase.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $168.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameRIDGID
Product typeDies & Taps

Questions about this item

How can I confirm the 47780 die is cutting correct 18 NPT threads on stainless pipe after setup?

Thread a calibrated NPT ring gauge onto the first few joints; the gauge should seat fully without forcing, confirming the 18 threads-per-inch pitch and right-hand taper are within spec.

What comes with the 47780 die set and what must I supply separately?

The set includes four high-speed-steel dies for 1/4 to 3/8 inch NPT; you must provide a compatible Ridgid universal die head and a threading machine such as the 1215, 1224, 300 or 535 series.

Which Ridgid threader models work with the 47780 die for 18 NPT stainless pipe?

The die fits Ridgid universal die heads on threader series 1215, 1224, 300 and 535; choose the machine that matches your shop’s existing threader series.

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