Cleveland C64107 Pipe Tap 1/8-27 Nptf 4 Flute Hss

Product Description

The CLEVELAND C64107 is a 1/8-27 NPTF interrupted thread pipe tap manufactured from high speed steel with a bright finish. It is designed to cut tapered pipe threads to the National Pipe Taper Fuel standard in ferrous workpieces, producing leak-resistant threaded connections in pipe fittings, valves, and fluid system components. At 2.125 inches overall length with a plug chamfer and 4-flute geometry, this tap is suited for through-hole and blind-hole applications where chip evacuation and thread accuracy are critical. Machinists, pipefitters, and plumbers rely on this tool when threading fittings by hand or in a drill press or tapping machine.

This tap is intended for use on alloy tool steel and carbon steel workpieces. The plug chamfer style provides a gradual thread lead-in, making it well-suited for through-hole pipe thread applications where the tap can advance fully through the material. It is commonly used in shop fabrication, maintenance repair operations, and field installation of pipe fittings requiring a sealed tapered thread. The interrupted thread design improves chip breaking and reduces torque, which is especially useful when tapping tougher ferrous alloys by hand.

Key Features

• 1/8-27 NPTF thread form produces tapered pipe threads to National Pipe Taper Fuel specification
• Interrupted thread geometry reduces cutting torque and improves chip breaking in ferrous materials
• High speed steel construction provides durability across alloy tool steel and carbon steel applications
• Plug chamfer lead-in allows gradual thread engagement for through-hole pipe tapping
• Bright finish with 4 flutes for efficient chip evacuation
• Regular hook geometry compatible with standard hand tap wrenches and tapping machines

Compatibility

Designed for tapping 1/8-27 NPTF tapered pipe threads in alloy tool steel and carbon steel workpieces. Fits standard tap wrenches and tapping machine holders accepting a 0.3125-inch shank diameter with a 0.234-inch square drive.

Installation Notes

This tap should be installed by a qualified machinist, pipefitter, or plumber using a properly sized tap wrench or tapping machine. Always apply an appropriate cutting fluid for the workpiece material before and during tapping to extend tool life and improve thread quality. Secure the workpiece firmly before beginning to tap, and back off periodically to break chips when hand tapping. Follow applicable shop safety practices and relevant plumbing or mechanical codes when threading pipe fittings intended for pressurized systems.