Cleveland
Cleveland C64039 Pipe Tap 1/4"-18 NPT 4 Flutes
Cuts 1/4"-18 NPT threads in pipe and conduit with four flutes for chip clearance
- 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.
Highlights
- 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
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Taps |
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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