Hertel R127747C-S 3/4-14 Nptf Pipe Tap Ticn Hss 5 Flute

Product Description

The HERTEL R127747C-S is a 3/4-14 NPTF interrupted thread pipe tap manufactured from high-speed steel with a TiCN (titanium carbonitride) coating. The interrupted thread design reduces cutting torque and helps clear chips more effectively than a standard continuous-thread tap, making it well suited for tough or gummy materials. With 5 flutes and a regular hook geometry, this tap is built for threading pipe-standard tapered holes to NPTF specifications. The TiCN coating adds surface hardness and lubricity, extending tool life in production environments. Thread length is 1.375 inches and overall length is 3.25 inches.

This tap is used by machinists and pipefitters threading 3/4-14 NPTF pipe connections in metalworking and industrial fabrication settings. The NPTF thread form creates a pressure-tight mechanical seal without the need for additional sealant, making it a common choice for hydraulic, pneumatic, and fluid-handling system components. The interrupted thread configuration is particularly useful when tapping blind holes or working with materials that tend to produce long, stringy chips. This is a single-piece production item suited for both manual and machine tapping operations.

Key Features

• 3/4-14 NPTF thread standard for pressure-tight pipe connections
• Interrupted thread geometry reduces cutting torque and improves chip evacuation
• TiCN coating increases surface hardness and extends tool life
• 5-flute design with regular hook for balanced cutting action
• High-speed steel construction handles a wide range of workpiece materials
• 0.9063-inch shank diameter with 0.6790-inch square drive size

Compatibility

Designed for use in any manual or CNC tapping application requiring a 3/4-14 NPTF interrupted thread pipe tap. Compatible with standard tap holders and machine spindles accepting a 0.9063-inch round shank with 0.6790-inch square drive end.

Installation Notes

This tap should be installed and operated by a qualified machinist familiar with pipe thread tapping procedures. Ensure the workpiece is securely fixtured and the tap is properly aligned with the drilled hole before beginning the tapping operation. Use an appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Inspect the tap for wear or damage before each use and replace if cutting edges show signs of chipping or excessive dullness.