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Cleveland C64037 pipe tap, 1/8 inch NPT, 4 flutes, bright steel

Cleveland

Cleveland C64037 Pipe Tap 1/8"-27 Semi-Bottoming 4 Flutes NPT

SKU CH-1EVQ-PNMHP

Cuts 1/8"-27 NPT threads in pipe and conduit with a semi-bottoming, four-flute high-speed steel design

  • Product typeTaps
  • Cuts precise 1/8"-27 NPT threads with 4-flute semi-bottoming design
  • High-speed steel construction resists wear for longer tool life
  • Semi-bottoming chamfer reaches deeper into blind holes
  • Bright uncoated finish reduces friction during threading
  • 75% thread drill size Q ensures proper tap engagement

Cleveland C64037 NPT Pipe Tap

The Cleveland C64037 is a high-speed steel pipe tap designed to cut 1/8"-27 NPT threads. Its semi-bottoming chamfer and four-flute geometry suit maintenance technicians and machinists creating or repairing tapered pipe connections in workshop or field environments.

Semi-bottoming chamfer for deeper thread engagement

Unlike a standard taper tap, the semi-bottoming design starts cutting closer to the bottom of a blind hole, reducing the need for multiple tools. The 75 percent thread drill size Q recommendation supports accurate hole preparation before the upgrade to this tap is made.

Suits right-hand NPT threading in steel and iron

This tap serves plumbers and mechanics cutting standard tapered pipe threads by hand or machine. It is not intended for straight-thread applications, metric sizes, or high-volume CNC production where coated or carbide tooling would be preferred.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $25.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

What size hole do I need to drill before tapping with the 1/8"-27 NPT pipe tap?

Drill a 75 percent thread hole using drill size Q to prepare for the 1/8"-27 NPT threads.

How do I start the semi-bottoming tap correctly in the drilled hole?

Apply cutting fluid, align the tap squarely with the hole, and turn the 4-flute tap clockwise with steady pressure to cut the NPT threads.

When should I replace the high-speed steel tap?

Replace the tap when the 4 flutes become dull, chipped, or no longer cut clean 1/8"-27 NPT threads in the workpiece.

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