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NPT Solid Carbide Straight Flute Pipe Tap

Precision Taper Threading for High-Pressure Pipe Systems

Product Overview

The NPT Solid Carbide Straight Flute Pipe Tap is engineered for cutting National Pipe Taper (NPT) threads into a wide range of materials, ensuring secure and pressure-tight connections in fluid, gas, and hydraulic systems. Featuring a straight flute geometry and constructed from ultra-fine grain solid tungsten carbide, this tap is ideal for through-hole threading in rigid, abrasive, or high-volume applications.

Whether you’re machining carbon steel, stainless steel, cast iron, or non-ferrous alloys, this tool delivers consistent thread quality, tight tolerances, and long tool life—perfect for both manual and CNC production environments where durability and accuracy are non-negotiable.

 

Key Features

  • Thread Type: NPT (National Pipe Taper), 60° thread angle

  • Material: Ultra-hard solid tungsten carbide for extended tool life

  • Flute Design: Straight flutes optimized for through-hole applications

  • Leak-Proof Threading: Creates taper threads for pressure-tight joints

  • Precision Ground: High thread profile accuracy and smooth finishes

 

Applications

  •  
  • Machining taper pipe threads for fluid or air-tight systems in pneumatic, hydraulic, gas, and water applications

  • Used in pipe fittings, valves, manifolds, machinery housings, and industrial piping systems

  • Suitable for carbon steel, tool steel, cast iron, brass, aluminum, and other alloys

  • Compatible with CNC tapping, automatic threading machines, and manual setups for prototyping or small batches

 

Advantages

  • High thread consistency for air-tight and fluid-tight connections

  • Rigid and durable for aggressive materials or high-speed tapping

  • Ideal for through-hole operations with minimal chip congestion

  • Superior wear resistance compared to HSS or cobalt taps

  • Compatible with rigid tapping systems, high-speed spindles, and manual tapping fixtures

 

Usage Recommendations

  • Match with the correct NPT pre-drilled hole diameter for best sealing results

  • Use cutting oil or coolant to reduce heat and extend tool life

  • Avoid in blind hole applications—use spiral flute versions for those cases

  • Regularly inspect for wear to maintain thread quality and avoid galling

 

Technical Specifications (Customizable)

ThreadPILCLDZLKK
NPT1/16-270.9412.5P16606474.5
NPT1/8-270.9412.5P18658486
NPT1/4-181.4112.5P19.570114119
NPT3/8-181.4112.5P21751441411
NPT1/2-141.8142.5P27801841714

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