Hertel R128016-S Pipe Tap 2-11/2 Nptf 7 Flute Hss

Product Description

The HERTEL R128016-S is a standard pipe tap designed to cut National Pipe Taper Fuel (NPTF) threads in ferrous and non-ferrous materials. Manufactured from high speed steel with a bright, uncoated finish, this tap produces a 2 - 11-1/2 NPTF thread form with 7 flutes for efficient chip evacuation and smooth cutting action. The 1.75 inch thread length provides adequate engagement for full-depth pipe thread formation. Plumbers, pipefitters, and machinists use this tap when threading pipe connections that require a dry, pressure-tight seal without the use of sealant tape or compound.

This tap is suited for threading pipe ports and fittings in plumbing, hydraulic, and pneumatic applications where NPTF thread form is specified. The 7-flute design distributes cutting load across more edges, reducing torque requirements in larger diameter taps. It is appropriate for use in both manual tapping operations with a tap wrench and machine tapping setups in drill press or CNC environments where feed rate and speed can be controlled.

Key Features

• NPTF thread standard for dry, pressure-tight pipe connections
• 7 flutes distribute cutting load and improve chip clearance on larger diameters
• High speed steel construction provides durability across a range of workpiece materials
• Bright, uncoated finish suitable for general-purpose threading applications
• 1.75 inch thread length supports full engagement depth for 2-inch pipe threads
• Regular hook geometry for controlled cutting action in hand and machine tapping

Compatibility

Designed as a standard replacement or direct-use pipe tap for applications requiring a 2 - 11-1/2 NPTF thread form in plumbing, hydraulic, and industrial piping systems.

Installation Notes

Pipe tapping at this diameter should be performed by a qualified plumber, pipefitter, or machinist familiar with NPTF thread standards. Always ensure the workpiece is securely fixtured and the correct drill size for a 2-inch NPTF tap is used before beginning the operation. Apply appropriate cutting fluid throughout the tapping process to reduce heat and extend tool life. Power down and de-energize any associated hydraulic or pneumatic system before tapping ports on installed equipment.