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Ridgid 47740 alloy right-hand pipe die 1/4 to 3/8 NPT 18 TPI four-piece set

Ridgid

Ridgid 47740 1/4-3/8 18 NPT Alloy Universal Right Hand Pipe Die

SKU CH-YQEE-WN1P2

Cuts 1/4 to 3/8 inch NPT right-hand threads in aluminum or steel using four alloy-steel dies at 18 threads per inch for Ridgid universal die heads

  • Product typeDies & Taps
  • Threads NPT pipe 1/4 to 3/8 in with 18 TPI right-hand alloy dies
  • Four die set fits Ridgid universal heads on models 1215 1224 300 535
  • Alloy steel dies cut aluminum and steel pipe for durable threads
  • Replaces worn dies on Ridgid 504A 711 713 threaders using part 47740
  • Compatible with Grainger die head references 4CW40 4Z974 5A195

Replacement Pipe Die 47740

The Ridgid 47740 is a replacement pipe die designed for threading machines. It suits professionals cutting NPT threads on aluminum or steel pipe. The die head fits Ridgid universal machines including models 504A, 711 and 713. Four alloy steel dies produce right-hand threads at 18 threads per inch.

Manual Operation Thermals Noise

Hand-operated threading generates negligible heat and low noise. No motor or electrical supply is required so power draw is zero. The alloy steel dies resist wear during normal pipe fabrication tasks. Compatible threader series include 1215, 1224, 300 and 535.

Sustained Load Die Life

Under continuous production the four dies maintain thread accuracy across repeated cuts. Alloy steel construction withstands the torque of machine threading without rapid dulling. The universal die head locks securely to compatible Ridgid equipment. Grainger part references 4CW40, 4Z974 and 5A195 confirm fitment.

How it compares

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

Price $133.99
Pricier than about 89% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameRIDGID
Product typeDies & Taps

Questions about this item

How do I install the 47740 die set into a 1215 threading machine, and what step is often missed?

Insert the four alloy steel dies into the universal die head slots matching the 18 NPT markings, then secure the head onto the 1215 machine; the missed step is confirming the right-hand thread direction arrow on the die head aligns with the machine's rotation before cutting.

What maintenance or replacement will the 47740 dies need after extended use on steel pipe?

The four alloy steel dies will gradually dull when threading 1/4 to 3/8 inch steel pipe at 18 threads per inch; replace the full die set when thread crest quality deforms or cutting torque rises noticeably.

What limit appears first when running the 47740 dies continuously on a 535 threading machine?

Heat buildup in the alloy steel dies and universal die head becomes the limiting factor during sustained 18 NPT right-hand threading, requiring cooling pauses to maintain thread accuracy on aluminum or steel pipe.

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