Irwin 6702 Hex Pipe Die 1/8-27 Npt 1 Inch Hex

Product Description

The IRWIN 6702 is a hex pipe die designed to cut 1/8-27 NPT external threads on pipe and fittings. The die is manufactured from carbon steel and fits a 1-inch hex die stock. It cuts right-hand threads to the NPT tapered thread standard, which is the dominant pipe thread form used in plumbing, HVAC, and gas piping across North America. Plumbers, pipefitters, and HVAC technicians reach for this die when threading small-diameter pipe in the field or at a workbench. It is sold as a single die, making it a practical replacement or addition to an existing threading set.

This die is sized for 1/8-inch pipe in NPT configuration, making it suited to small-bore applications such as gas line connections, instrumentation fittings, compressed air lines, and water supply branch lines. It is a common size in residential and light commercial mechanical work where 1/8-27 NPT fittings appear on gauges, valves, and test ports. The 1-inch hex body seats into standard hex die stocks used by plumbing and pipefitting tradespeople.

Key Features

• Cuts 1/8-27 NPT tapered pipe threads for leak-resistant threaded connections
• Carbon steel construction provides durability for threading mild steel and iron pipe
• 1-inch hex body fits standard hex die stocks
• Right-hand thread direction matches standard NPT fittings and valves
• Single-die packaging allows targeted replacement without purchasing a full set

Compatibility

Designed as an OEM-style replacement hex pipe die for use with 1-inch hex die stocks that accept 1/8-27 NPT dies in standard threading sets.

Installation Notes

This die is installed by a plumber, pipefitter, or HVAC technician into a compatible 1-inch hex die stock before threading operations begin. Ensure the die is fully seated and the set screw is secure before applying cutting pressure. Use an appropriate thread-cutting oil throughout the threading pass to extend die life and produce clean threads. Follow applicable code requirements under the IFGC or IPC for pipe thread preparation and joint compound application before assembly.