Cleveland C64101 Pipe Tap 1/2-14 Npt 4 Flute Hss

Product Description

The CLEVELAND C64101 is an interrupted thread pipe tap designed for cutting 1/2-14 NPT internal pipe threads in ferrous metals. Built from high speed steel with a bright finish, this tap features four flutes in an interrupted pattern that breaks up chips during cutting, reducing torque buildup and improving chip evacuation in deep or blind-hole applications. The plug chamfer provides a standard entry angle suitable for through-hole tapping in most pipe thread applications. At 3.125 inches overall length with a 1.375-inch thread length, it fits standard tap wrench and machine setups used by pipefitters, plumbers, and machinists working on threaded pipe connections.

The C64101 is suited for tapping 1/2-14 NPT threads in alloy steel, tool steel, and carbon steel workpieces. Common applications include fabricating or repairing threaded fittings, manifolds, valve bodies, and pipe flanges in plumbing, HVAC, and industrial piping systems. The interrupted thread geometry makes it a preferred choice when working in materials that produce long, stringy chips or when machine tapping at elevated speeds where chip control is critical.

Key Features

• Interrupted thread flute pattern breaks chips and reduces torque in alloy and carbon steel
• High speed steel construction provides heat and wear resistance for production tapping
• Plug chamfer with regular hook for standard through-hole NPT thread starts
• Bright finish allows visual inspection of cutting edges between uses
• 0.6875-inch shank diameter fits standard tap holders and machine spindles
• 0.515-inch square drive size compatible with common tap wrenches

Compatibility

Designed for cutting 1/2-14 NPT internal pipe threads in alloy tool steel and carbon steel workpieces. Suitable for use in hand tap wrenches and machine tapping setups that accept a 0.6875-inch shank diameter.

Installation Notes

This tap is installed and operated by pipefitters, machinists, and plumbers using standard tap wrenches or machine tapping heads. Secure the workpiece fully before tapping and use appropriate cutting fluid for the base material to extend tool life and improve thread finish. Inspect cutting flutes before use and replace if chipped or worn to avoid thread damage or tap breakage. Follow ASME B1.20.1 pipe thread standards for correct drill size and thread engagement depth.