Hertel R127115-S 1/8-27 Npt Pipe Tap 5 Flute Hss

Product Description

The HERTEL R127115-S is a 1/8-27 NPT interrupted thread pipe tap manufactured from high-speed steel with a bright, uncoated finish. It is designed to cut internal tapered pipe threads in metal workpieces, creating leak-resistant threaded connections for pipe fittings and fluid or gas line assemblies. The interrupted thread design reduces cutting forces and chip packing, making it well suited for tapping tougher materials and through-holes where chip evacuation is a concern. With 5 flutes and a regular hook, it delivers controlled cutting action across a range of materials common in mechanical and trade-shop environments. Machinists, pipefitters, and HVAC or plumbing technicians use this tap when fabricating or repairing threaded pipe connections.

This tap is used in applications requiring 1/8-27 NPT internal threads, including fittings for water, gas, air, and hydraulic lines in residential and light commercial settings. It is appropriate for bench work, drill press, and hand-tapping operations where a standard NPT thread profile is required. The 3/4-inch thread length accommodates typical pipe fitting engagement depths, and the 5/16-inch shank diameter fits standard tap wrenches and holders sized for this class of tap.

Key Features

• Interrupted thread geometry reduces cutting forces and improves chip evacuation during tapping
• High-speed steel construction provides hardness and wear resistance across a broad range of metals
• 1/8-27 NPT thread standard for tapered pipe thread connections
• 5 flutes with regular hook for controlled, consistent thread formation
• Bright uncoated finish allows visual inspection of cutting edges before and after use
• 0.3125-inch shank diameter compatible with standard tap wrenches and machine holders

Compatibility

Designed as an OEM-style replacement or direct-use tap for applications requiring 1/8-27 NPT internal pipe threads in ferrous and non-ferrous metals.

Installation Notes

This tap is installed and operated by machinists, pipefitters, or qualified tradespeople using a tap wrench, tapping head, or drill press with appropriate speed and feed settings for the workpiece material. Always secure the workpiece before tapping and apply cutting fluid to extend tool life and improve thread quality. Inspect the tap for chipping or wear before each use and replace if cutting edges are damaged. Follow applicable shop safety practices and relevant codes when fabricating threaded pipe connections for pressurized systems.