1/4" NPT 1-1/2" OD HSS Die
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HSS NPT (National Pipe Taper) Dies are precision-engineered threading tools designed for cutting, restoring, and repairing external tapered pipe threads used extensively across hydraulic, pneumatic, plumbing, gas, and industrial fluid systems. Manufactured from high‑speed steel, these dies provide exceptional hardness, edge retention, and long‑term durability, ensuring reliable thread production even under demanding workshop and field service conditions. NPT threads feature a tapered profile that tightens progressively as the fitting is assembled, creating a strong mechanical seal capable of withstanding pressure and vibration. Because sealing integrity relies on accurate thread geometry, these HSS dies are ground to deliver clean, consistent, and tightly‑toleranced thread profiles on a wide range of pipe metals including mild steel, stainless steel, brass, and aluminium. Available in all standard NPT pipe sizes and outside diameters suited for different die stocks, these dies are essential tools for technicians, fitters, plumbers, maintenance engineers, and fabricators working with U.S. standard piping systems.
| Item # | Description | Material | Pitch / TPI | Thread | Qty | Stock | Price | Action |
|---|---|---|---|---|---|---|---|---|
| 6481310 | ||||||||
| 6481320 | ||||||||
| 6481330 | ||||||||
| 6481340 |
- Durable high‑speed steel construction provides superior wear resistance, hardness, and cutting performance
- Precision‑ground cutting edges ensure clean, accurate NPT tapered thread profiles
- Ideal for cutting, restoring, and repairing tapered external pipe threads
- Tapered thread form achieves a reliable pressure‑tight seal for gas, air, hydraulic, and fluid lines
- Smooth cutting action reduces friction, heat buildup, and cutting resistance
- Performs reliably on steel, stainless steel, brass, aluminium, and common pipe‑grade metals
- Multiple OD formats ensure compatibility with standard die stocks and threading holders
- Essential for plumbing, industrial maintenance, hydraulic assembly, and fabrication workshops
- Produces leak‑resistant threaded joints with high mechanical strength and reliability
- Professional‑grade tooling suitable for both workshop and onsite use
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