Hertel R127826C-S Pipe Tap 1 11-1/2 Npt Ticn Hss 5 Flute

Product Description

The HERTEL R127826C-S is an interrupted thread pipe tap designed for cutting 1 - 11-1/2 NPT internal pipe threads in demanding machining applications. Manufactured from high-speed steel with a TiCN (titanium carbonitride) coating, this tap delivers increased surface hardness and heat resistance compared to uncoated HSS tools. The interrupted thread design reduces cutting torque and helps clear chips more effectively in tough or stringy materials. With 5 flutes and a regular hook geometry, it is suited for controlled tapping in ferrous and non-ferrous metals. The shank diameter measures 1.125 inches and the square drive size is 0.843 inches, fitting standard tap wrenches and machine holders for this size range.

This pipe tap is used in plumbing, HVAC, and industrial piping fabrication where NPT-standard tapered pipe threads are required. Typical applications include threading pipe fittings, manifold bodies, valve ports, and hydraulic or pneumatic blocks where a leak-resistant tapered thread form is needed. The 1-3/4-inch thread length accommodates full engagement in standard pipe wall thicknesses. It is appropriate for use in machine tapping operations as well as hand tapping by experienced machinists and pipefitters.

Key Features

• 1 - 11-1/2 NPT tapered pipe thread form for leak-resistant threaded connections
• Interrupted thread design reduces torque and improves chip evacuation
• TiCN coating increases surface hardness and extends tool life in abrasive materials
• High-speed steel construction provides toughness across a wide range of workpiece materials
• 5-flute geometry with regular hook for controlled cutting action
• 1.125-inch shank diameter and 0.843-inch square size fit standard tap holders for this size range

Compatibility

Designed for use with standard tap wrenches, machine tap holders, and drill press or CNC tapping setups configured for 1-inch NPT pipe tap shank dimensions.

Installation Notes

This tap should be installed and operated by a qualified machinist or pipefitter familiar with NPT thread standards. Always ensure the workpiece is securely fixtured and the pilot hole diameter matches the recommended tap drill size for 1 - 11-1/2 NPT before beginning. Use cutting fluid appropriate for the workpiece material to preserve coating life and maintain thread quality. Inspect the tap for wear or chipping before each use and do not force a damaged tool.