Hertel R128041T-S Pipe Tap 2 11-1/2 Nptf 7 Flute Tin Hss

Product Description

The HERTEL R128041T-S is a 2 inch to 11-1/2 NPTF interrupted thread pipe tap manufactured from high speed steel with a titanium nitride (TiN) coating. Designed for cutting taper pipe threads in ferrous and non-ferrous materials, this tap produces NPTF-standard threads that form a pressure-tight mechanical seal without the need for thread sealant compounds. The interrupted thread geometry reduces cutting forces and helps clear chips in tough materials. With 7 flutes, a 4.5 inch overall length, and a 1.875 inch shank diameter, this is a heavy-duty tooling solution suited for production and maintenance machining environments.

This pipe tap is intended for use in machine shops, industrial maintenance facilities, and heavy fabrication operations where large-diameter NPTF pipe thread tapping is required. The interrupted thread design is particularly well suited for materials that tend to produce long, stringy chips or that generate significant heat during cutting. A regular hook geometry makes it compatible with standard rigid tapping setups and CNC machining centers. It is typically installed and operated by machinists, tool and die makers, and maintenance mechanics working with pipe fittings, manifolds, fluid transfer components, and pressure vessels.

Key Features

• Interrupted thread geometry reduces cutting torque and improves chip evacuation in difficult materials
• TiN coating extends tool life by increasing surface hardness and reducing friction at the cutting edge
• NPTF thread standard produces pressure-tight dry-seal pipe threads without sealant
• 7-flute configuration provides additional cutting edges for improved thread finish in large-diameter applications
• High speed steel construction supports use across a wide range of workpiece materials
• Regular hook design is compatible with standard rigid tapping holders and CNC setups

Compatibility

Designed for tapping 2 inch to 11-1/2 NPTF taper pipe threads in machining applications requiring dry-seal pressure-tight thread forms.

Installation Notes

This tap should be installed and operated by qualified machinists familiar with large-diameter pipe thread tapping procedures. Ensure the workpiece is rigidly fixtured and the spindle is properly aligned before operation to prevent tap breakage or thread form error. Use a cutting fluid appropriate for the workpiece material to maintain tool life and thread quality. Always bring the machine to a complete stop before removing or inspecting the tap.