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Cleveland C64039 pipe tap, 1/4"-18 NPT, four flutes, bright high-speed steel

Cleveland

Cleveland C64039 Pipe Tap 1/4"-18 NPT 4 Flutes

SKU CH-1RWC-HMZG8

Cuts 1/4"-18 NPT threads in pipe and conduit with four flutes for chip clearance

  • Product typeTaps
  • 1/4"-18 NPT threads cut cleanly with four-flute high-speed steel
  • Semi-bottoming design starts threads easily in blind holes
  • Bright uncoated finish resists galling on ferrous pipe
  • 75 % thread drill size .4375 in matches standard tap drill charts
  • Right-hand 2 7/16 in overall length fits common tap handles

Cleveland C64039 Pipe Tap

This Cleveland C64039 pipe tap cuts internal threads for 1/4"-18 NPT connections. It is designed for machinists and maintenance technicians who need to create or repair tapered pipe threads in metal components. The high-speed steel construction provides durability for general-purpose threading tasks in workshop environments.

Sustained threading performance

The four-flute design distributes cutting forces evenly during extended threading operations. High-speed steel maintains hardness at the temperatures generated by continuous cutting in steel or iron pipe fittings. The semi-bottoming chamfer allows the tap to start threads and cut close to the bottom of blind holes without excessive torque buildup.

NPT taper constraints

The 1/4"-18 NPT standard requires a tapered thread form that seals through thread interference rather than a gasket. The 75 percent thread drill size of .4375 in prepares the hole for proper thread engagement. Right-hand cutting direction matches standard pipe threading practice for assembly with compatible fittings.

How it compares

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

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

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How much heat does the 1/4"-18 NPT pipe tap generate during extended threading sessions?

The high-speed steel body dissipates heat effectively during continuous cutting; using cutting fluid keeps the 4-flute tap cool and prevents workpiece damage.

What drive tool is required to turn the 1/4"-18 NPT tap?

A tap wrench or T-handle that fits the tap's square shank is needed; the tool is not included with the Cleveland C64039.

Can the 1/4"-18 NPT tap cut threads in existing galvanized pipe?

Yes, the uncoated high-speed steel 4-flute design cuts clean NPT threads in galvanized, black iron, or steel pipe when used with proper lubrication.

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