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Four alloy steel pipe threading dies in a set

Ridgid

Ridgid 504A Trap 47745 1/2-3/4 NPT 14 TPI 4 Pc

SKU CH-G14S-KZYPW MPN 504A

Four-piece alloy steel die set cuts 14 TPI NPT threads on 1/2 to 3/4 inch pipe for compatible RIDGID die heads

  • TypeDrain Components
  • Covers 1/2 to 3/4 inch NPT pipe sizes with 14 threads per inch
  • Alloy steel dies resist wear during repeated threading operations
  • Four-piece set provides complete replacement for 504A die heads
  • Compatible with 504A, 713, 816, 817 and 842 universal die heads
  • Works with 4CW40, 4Z974 and 5A195 threading machine die heads

Pipe threading die set for NPT threads

This Ridgid 504A die set contains four alloy steel replacement dies for cutting right-hand NPT threads at 14 threads per inch. It covers nominal pipe sizes from 1/2 inch to 3/4 inch and is designed for use with compatible Ridgid universal die heads including models 504A, 713, 816, 817 and 842.

For pipe fitters and maintenance crews cutting

Plumbers and pipe fitters who need to cut or repair 1/2 inch to 3/4 inch NPT threads on steel pipe will find this four-piece alloy die set matches their machine heads. It is not suited for left-hand threading, metric pipe standards, larger diameters or high-volume production threading that requires hardened high-speed steel dies.

14 threads per inch NPT thread pitch

The fixed 14 TPI pitch determines compatibility with standard NPT pipe threads in the 1/2 to 3/4 inch range. Verify your threading machine die head accepts this pitch before purchase, as mismatched dies will not produce a sealing thread.

Highlights

  • Covers 1/2 to 3/4 inch NPT pipe sizes with 14 threads per inch
  • Alloy steel dies resist wear during repeated threading operations
  • Four-piece set provides complete replacement for 504A die heads
  • Compatible with 504A, 713, 816, 817 and 842 universal die heads
  • Works with 4CW40, 4Z974 and 5A195 threading machine die heads

Specifications

TypeDrain Components
BrandRidgid
Model47745

Questions about this item

Does the alloy-steel construction of the 47745 dies generate noticeable heat during extended threading sessions?

The dies are made of alloy steel for durability; they do not produce measurable heat during normal pipe-threading operations.

Which Ridgid die heads must I already own to use this 4-piece NPT set?

The set fits Ridgid models 504A, 713, 816, 817 and 842 universal die heads, plus compatible 4CW40, 4Z974 and 5A195 threading machine die heads.

Will these 14 TPI dies thread correctly on older 1/2 in and 3/4 in NPT pipe I already have?

Yes — the right-hand 14 TPI NPT profile matches standard 1/2 in to 3/4 in nominal pipe sizes, so existing pipe of those sizes threads normally.

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