Hertel R127097K-S Pipe Tap 1/8-27 Npt 5 Flute Hss

Product Description

The HERTEL R127097K-S is a 1/8-27 NPT interrupted thread pipe tap manufactured from high speed steel with a chrome plated finish. It is designed to cut internal pipe threads in metal workpieces where standard continuous-thread taps may struggle with chip evacuation or heat buildup. The interrupted thread geometry reduces cutting contact, lowering torque demand and improving chip clearance in tough materials. With 5 flutes and a regular hook angle, this tap suits production and maintenance environments where accurate NPT thread form is required. Machinists, pipefitters, and maintenance technicians use this tool in shop and field applications.

This tap is suited for threading pipe fittings, manifold ports, hydraulic blocks, and similar workpieces requiring 1/8-27 NPT internal threads. The 1/8-27 NPT size is common in low-pressure fluid and pneumatic line connections found in HVAC, plumbing, and industrial maintenance applications. The chrome plated finish provides lubricity and corrosion resistance, extending service life in production use. Overall length of 2.125 inches allows use in standard tap wrenches and tapping heads.

Key Features

• Interrupted thread design reduces torque and improves chip clearance during tapping
• 5-flute configuration provides additional cutting edges for cleaner thread form
• High speed steel construction handles a wide range of metals including mild steel, cast iron, and aluminum
• Chrome plated finish adds lubricity and resists corrosion during storage and use
• Regular hook angle suits general-purpose through-hole and blind-hole tapping
• 0.4375 inch shank diameter fits standard tap wrenches and machine tap holders

Compatibility

Designed for cutting 1/8-27 NPT internal threads in ferrous and non-ferrous metals. Fits standard tap wrenches and tapping heads accepting a 0.4375 inch round shank with a 0.328 inch square drive.

Installation Notes

This tap is installed and operated by machinists or maintenance technicians using a tap wrench or machine tapping attachment. Always use appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Secure the workpiece firmly before tapping and align the tap perpendicular to the hole entry to avoid tap breakage. Periodically back off to break chips when tapping blind holes.