Osg 2734200 Adjustable Pipe Die 1/4-18 Npt 1-1/2 in Od

Product Description

The OSG 2734200 is a round, adjustable pipe die designed to cut 1/4-18 NPT external threads on pipe and fittings. Built from high-speed steel (HSS), it delivers consistent thread form across repeated cuts without rapid edge breakdown. The 1-1/2-inch outside diameter fits standard round die stocks that accept that size. The adjustable design allows the cutting diameter to be fine-tuned, compensating for tool wear or material variation to keep threads within NPT specification. Plumbers, pipefitters, and mechanical contractors use this die when threading pipe in the field or at a shop bench.

This die is suited for threading ferrous and non-ferrous pipe in residential and light commercial plumbing and gas piping applications. Right-hand thread direction aligns with standard NPT convention used throughout domestic pipe systems. It is a practical addition to any threading kit where 1/4-18 NPT thread sizes are regularly needed, particularly in close-quarter or small-diameter pipe work.

Key Features

• Adjustable cutting diameter allows fine-tuning to compensate for wear and material variation
• High-speed steel construction resists heat and maintains cutting edge through repeated use
• 1/4-18 NPT thread specification for standard tapered pipe thread applications
• 1-1/2-inch outside diameter fits compatible round die stocks
• Right-hand thread direction matches standard NPT convention
• Round die body allows rotation within the stock for easy adjustment

Compatibility

Designed as an OEM-style replacement or standard-fit die for round die stocks accepting a 1-1/2-inch outside diameter, used in threading 1/4-18 NPT pipe and fittings.

Installation Notes

A licensed plumber or pipefitter should perform NPT threading work on pressurized systems in compliance with applicable IPC and IFGC requirements. Before threading, ensure pipe is properly deburred and cut square to achieve a clean thread form. Use cutting oil during threading to extend die life and improve thread quality. Adjust the die set screw incrementally and test thread fit with a gauge fitting rather than tightening against a live fitting to verify engagement.