Ridgid
Ridgid 632-47750 2 in. NPT pipe die set 11-1/2 TPI RH alloy steel
2-inch NPT pipe die set with 11-1/2 TPI right-hand alloy steel dies compatible with Ridgid 1215, 1224, 300, and 535 threading machines
- TypeBolt Extractors
- Selling UnitSet
- Cuts clean NPT threads on aluminium and steel pipe
- Four dies cover 1 in. to 2 in. pipe sizes
- Alloy steel construction resists wear in repeated use
- Right-hand thread direction matches standard pipe fittings
- Fits Ridgid 1215, 1224, 300 and 535 threading machines
2 in. NPT Pipe Die Set for Threading Machines
This set contains four alloy-steel dies cut to 11-1/2 threads per inch for right-hand NPT pipe threads. It fits Ridgid universal die heads used on threading machine series 1215, 1224, 300 and 535. The dies handle pipe diameters from 1 in. to 2 in. in aluminum or steel.
Practical limits of the NPT standard
NPT threads rely on taper engagement, so the dies only produce the 11-1/2 TPI profile required for that standard. They will not cut straight threads, metric threads or left-hand threads. The dies are restricted to the listed Ridgid machine series; other threader brands or die-head models will not accept them.
Installation notes and common issues
Each die drops into the universal die-head slots and locks with the head’s built-in clamp — no extra tools are needed. The most frequent problem is installing a die backwards, which cuts a left-hand thread instead of the required right-hand thread. Another common issue is running the machine without cutting oil, causing premature wear on the alloy-steel cutting edges.
Highlights
- Cuts clean NPT threads on aluminium and steel pipe
- Four dies cover 1 in. to 2 in. pipe sizes
- Alloy steel construction resists wear in repeated use
- Right-hand thread direction matches standard pipe fittings
- Fits Ridgid 1215, 1224, 300 and 535 threading machines
Specifications
| Brand | RIDGID |
|---|---|
| Type | Bolt Extractors |
| Selling Unit | Set |
Questions about this item
Which die set matches a 2 in. NPT pipe size with right-hand threads?
This set is rated for 1 in to 2 in pipe, uses NPT thread form, and cuts right-hand threads at 11-1/2 TPI with four alloy-steel dies.
What does the 11-1/2 threads per inch figure mean when threading pipe on the machine?
It sets the thread pitch for NPT taper threads, so each inch of engaged length carries 11-1/2 threads for the standard seal.
Which threader models accept the die head that fits part numbers 4CW40, 4Z974, and 5A195?
The die head fits Ridgid threader series 1215, 1224, 300, and 535, and mounts on the universal die head used by those machines.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
